What is the age of A in a group of 6 students A, B, C, D, E and F whose average age is 16 years?Statement I: Total age of B and D is 30 yearsStatement II: Total age of E and F is 31 years.Statement III: Total age of A is 10 years.

Even all together are not sufficient

Only I and II together are sufficient

Only II and III together are sufficient

Any two of the three are sufficient

Even all together are not sufficient

The average age of P, Q, R, and S is 30 years. How old is R?I. The sum of ages of P and R is 60 years.II. S is 10 years younger than R.

I alone sufficient while II alone not sufficient to answer

II alone sufficient while I alone not sufficient to answer

Either I or II alone sufficient to answer

Both I and II are not sufficient to answer

a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all the numbers is:

$${ left(a+b+m+n over 4 right)}$$

$${ left(j+c+n+g over 4 right)}$$

146 + Mcqs in Average Questions in Maths Page 2 McqOptions

51.	The owner of a bike buys petrol for 3 years continuously at Rs 64, Rs 80 and Rs 320 per litre respectively. If he spends Rs 32,000 every year buying petrol, what is the average price per litre of petrol?
A.	120
B.	84
C.	108
D.	96
Answer» E.

Discussion

52.	An examination was conducted for five subjects where the maximum marks for each subject was 100. Scored 82,97, 88 and 91 marks in 4 subjects respectively. If his total marks were 90 percent, then how many marks did he get in fifth subjects?
A.	92
B.	94
C.	89
D.	79
Answer» B. 94

Discussion

53.	In a class of 66 students there are 33 girls. The average weight of these girls is 61 Kg and average weight of the full class is 66 kgs. What is the average weight of the boys of the class?
A.	71
B.	72
C.	73
D.	69
Answer» B. 72

Discussion

54.	The average weight of 29 students is 40 kg. If the weight of teacher be included the average weight increased by 400 gms. The weight of the teacher is-
A.	50 kg
B.	49 kg
C.	52 kg
D.	55 kg
E.	None of these
Answer» D. 55 kg

Discussion

55.	The average score obtained by Sandeep in 12 Tests is 25. Rumella has an average of 23 marks so far, but has competed in only 8 Tests. What average will Rumela have to earn in the remaining 4 Tests to be equal to Raghuveer's average?
A.	28
B.	29
C.	26
D.	27
Answer» C. 26

Discussion

56.	Ram has 5 daughters. The average age of these 5 sisters is 28 years. The youngest one is 16 years old. What was the average age of the 4 daughters before the youngest one was born?
A.	28 years
B.	15 years
C.	31 years
D.	16 years
E.	20 years
Answer» C. 31 years

Discussion

57.	What is the age of A in a group of 6 students A, B, C, D, E and F whose average age is 16 years? Statement I: Total age of B and D is 30 years Statement II: Total age of E and F is 31 years. Statement III: Total age of A is 10 years.
A.	Only I and II together are sufficient
B.	Only II and III together are sufficient
C.	Any two of the three are sufficient
D.	All three together are needed
E.	Even all together are not sufficient
Answer» E. Even all together are not sufficient

Discussion

58.	The average marks of 42 students in an examination, were 64. Later it was found that the marks of three students were misread as 72, 58 and 44 instead of the actual marks 64, 42 and 26 respectively. What are the correct average marks?
A.	60
B.	60
C.	62
D.	63
E.	None of these
Answer» F.

Discussion

59.	The average of all prime numbers 21 to 50 is (round off to one decimal number)
A.	35.9
B.	34.8
C.	33.7
D.	32.9
Answer» B. 34.8

Discussion

60.	The average weight of 14 children is 22 kg. If the weight of the teacher is also included, then the average weight becomes 23 kg. What is the teacher's weight?
A.	34 kg
B.	37 kg
C.	40 kg
D.	35 kg
Answer» C. 40 kg

Discussion

61.	In a certain year, the average monthly income of a person was Rs.3,400. For the first eight months of the years, his average monthly income was Rs. 3,160 and for the last five months, it was Rs.4,120. His income in the eighth month of the year was:
A.	Rs . 3,160
B.	Rs . 5,080
C.	Rs . 15,520
D.	Rs . 5, 520
Answer» C. Rs . 15,520

Discussion

62.	The average per day income of A, B and C is Rs. 450. If the average per day income of A and B be Rs. 400 and that of B and C be Rs. 430, the per day income of B is:
A.	Rs . 300
B.	Rs . 310
C.	Rs. 415
D.	Rs . 425
Answer» C. Rs. 415

Discussion

63.	The present age of a father is 3 years more than three times the age of his son. Three years hence, father's age will be 10 years more than twice the age of the son. The father's age is:
A.	33 years
B.	39 years
C.	45 years
D.	40 years
Answer» B. 39 years

Discussion

64.	The average weight of three men A, Band C is 84 kg. D joins them and the average weight of the four becomes 80 kg. If E whose weight is 3 kg more than that of D, replaces A, the average weight of B, C, D and E becomes 79 kg. The weight of A is:
A.	65 kg .
B.	70 kg .
C.	75 kg.
D.	80kg .
Answer» D. 80kg .

Discussion

65.	of the three numbers, the first is 3 times the second and the third is 5 times the first. If the average of the three numbers is 57, the difference between the largest and the smallest number is:
A.	9
B.	18
C.	126
D.	135
Answer» D. 135

Discussion

66.	If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55 and 60, then the average marks of all the students is?
A.	54.68
B.	53.33
C.	55
D.	None of these
Answer» B. 53.33

Discussion

67.	The average of the marks obtained in an examination by 8 students was 51 and by 9 other students was 68. The average marks of all 17 students was?
A.	59
B.	59.5
C.	60
D.	60.5
Answer» D. 60.5

Discussion

68.	There are three numbers in such a way that the average of the first and second numbers is 68 more than the average of the second and third number. Find the difference between first and the third number.
A.	148
B.	146
C.	156
D.	136
E.	None of these
Answer» E. None of these

Discussion

69.	The average of x numbers is 48. If of the numbers are increased by 51 each and remaining are decreased by 71 each, then what is the new average?
A.	51
B.	49
C.	50
D.	46
Answer» B. 49

Discussion

70.	The average weight of 24 students is 35 kg. If the weight of teacher is added the average increased by 400 gram. What is the weight of the teacher?
A.	46 kg
B.	45 kg
C.	64 kg
D.	36 kg
Answer» C. 64 kg

Discussion

71.	There are 45 male and 15 female employees in an office. If the mean salary of the 60 employees is Rs 4800 and the mean salary of the male employees is Rs 5000, then the mean salary of the female employees is
A.	Rs 4200
B.	Rs 4500
C.	Rs 5600
D.	Rs 6000
Answer» B. Rs 4500

Discussion

72.	A man spends Rs. 1800 monthly on an average for the first four months and Rs. 2000 monthly for the next eight months and saves Rs. 5600 a year. His average monthly income is
A.	Rs. 2000
B.	Rs. 2200
C.	Rs. 2400
D.	Rs. 2600
Answer» D. Rs. 2600

Discussion

73.	Find the average of all prime numbers between 30 and 50.
A.	41.8
B.	38.8
C.	37.8
D.	39.8
Answer» E.

Discussion

74.	In a class of 50 students there are 27 girls. The average weight of these girls is 45 kg and average weight of the full class is 49.6 kgs. What is the average weight of the boys of the class?
A.	54.2
B.	55
C.	53.4
D.	53
Answer» C. 53.4

Discussion

75.	The average weight of Sudesh, Jyothi and Ritu is 89 kg. If the average weight of Sudesh and Jyothi be 98 kg and that of Jyothi and Ritu be 83 kg, then the weight of Jyothi is
A.	58
B.	56
C.	66
D.	95
Answer» E.

Discussion

76.	The average of nine numbers in M and the average of three of these is P. If the average of remaining numbers is N, then
A.	2M = N + P
B.	3M = 2P +N
C.	M =N + P
D.	3M = 2N +P
Answer» E.

Discussion

77.	A party for 50 people was organized at their own expense. 48 of them paid Rs 950 each, while the other two paid Rs 1200 more than the group's average expenditure. The total expenditure incurred was.
A.	75,000
B.	40,000
C.	25,000
D.	50,000
Answer» E.

Discussion

78.	A class has 90 students, of which 60 percent are girls and the rest are boys. Boys' average score in English is 30 percent higher than girls. If the average score of all students in English is 56, then what is the average score of only girls in English?
A.	62
B.	48
C.	50
D.	45
Answer» D. 45

Discussion

79.	A batsman in his 20th innings make a score of 110 and there by increases his average by 4. What is his average after 20 innings?
A.	34
B.	43
C.	36
D.	30
Answer» B. 43

Discussion

80.	Subjects, there were 9 boys and some girls. In a test, the mean score obtained by the boys was 13 while that obtained by the girls was 15. If the overall average was 14.28, what was the total number of students in the class?
A.	24
B.	26
C.	27
D.	25
Answer» E.

Discussion

81.	The total average salary of 50 employees in a company is Rs 5,000. If there are 35 male employees among these employees whose average salary is Rs 6,000, then what will be the average salary of the remaining female employees?
A.	2560.66
B.	2666.66
C.	2590
D.	2560.67
Answer» C. 2590

Discussion

82.	The average of 6 numbers is 20. If a number is removed then average becomes 15. In place of removed number by adding a number 39 the average of new 6 number will be__
A.	17
B.	20
C.	19
D.	18
Answer» D. 18

Discussion

83.	The average age of 30 students of a class is 15 years. A 20-year-old student left the class and replaced by two new students, whose age difference is 5 years. If the average age of all students is 15 years, then what will be ratio of young student to elder students.
A.	4 :5
B.	3:5
C.	3:4
D.	4:3
Answer» D. 4:3

Discussion

84.	The total number of students in sections A and B of a class is 72. The ratio of the number of students in A and B is 7 :5 . The average weight (in kg) of the students in section B is 20% more than that of the students in section A. If the average weight of all the students in the class is 52 kg, then what is the average weight (in kg) of the students in section B?
A.	57.6
B.	57.9
C.	56.4
D.	58.2
Answer» B. 57.9

Discussion

85.	What is the average of the squares of the first 19 natural numbers?
A.	130
B.	133.5
C.	124
D.	127.5
Answer» B. 133.5

Discussion

86.	One boy from a group of eight boys left and a new boy with a weight of 56 kg joined the group, which resulted in an average weight of 2.5 kg has increased, what is the weight of the new boy?
A.	38.5 Kg
B.	38 Kg
C.	36.5 Kg
D.	36 Kg
Answer» E.

Discussion

87.	What is the average of all numbers between 100 and 200 which are divisible by 13?
A.	147.5
B.	145.5
C.	143.5
D.	149.5
Answer» E.

Discussion

88.	The average of 24 number is 65. The average of first 11 number is 67 and the average of last 10 number is 70. If the 12^th Number is 13 less than the 13^th number , and the 14^th number is one more than the 13^th number, then the average of 12^th and 14^th number is:
A.	24
B.	36
C.	39
D.	42
Answer» D. 42

Discussion

89.	The average age of P, Q, R, and S is 30 years. How old is R? I. The sum of ages of P and R is 60 years. II. S is 10 years younger than R.
A.	I alone sufficient while II alone not sufficient to answer
B.	II alone sufficient while I alone not sufficient to answer
C.	Either I or II alone sufficient to answer
D.	Both I and II are not sufficient to answer
Answer» E.

Discussion

90.	When the average age of husband, wife and their son was 42 years, the son got married and a child was born just one year after marriage. When the child turned to be 5 years, the average age of the family becomes 36 years. What was the age of daughter-in-law at the time of marriage?
A.	24 year
B.	28 year
C.	30 year
D.	25 year
Answer» E.

Discussion

91.	What will be the average of the following set of scores? 59, 84, 44, 98, 30, 40, 58
A.	62
B.	66
C.	75
D.	52
E.	59
Answer» F.

Discussion

92.	The average monthly income of A and B is Rs.15,050 , and the average monthly income of B and C is Rs.15,350 and the average income of A and C is Rs.15,200. The monthly income of A is.
A.	Rs.15,200
B.	Rs. 14,900
C.	Rs. 15,500
D.	Rs. 15,900
Answer» C. Rs. 15,500

Discussion

93.	a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all the numbers is:
A.	$${ left(a+b+m+n over 4 right)}$$
B.	$${ left(j+c+n+g over 4 right)}$$
C.	$$3{ left(a+n over 2 right)}$$
D.	$${ left(l+d over 2 right)}$$
Answer» E.

Discussion

94.	The average of three consecutive odd numbers is 12 more than one third of the first of these numbers. What is the last of the three numbers?
A.	19
B.	16
C.	15
D.	17
Answer» B. 16

Discussion

95.	The average of 5 consecutive natural numbers is M. If the next three natural numbers are also included, how much more than M will the average of these 8 numbers be?
A.	1.4
B.	1.5
C.	2
D.	1
Answer» C. 2

Discussion

96.	The average monthly salary of the workers in a workshop is Rs. 8,500. If the average monthly salary of 7 technicians is Rs.10,000 and average monthly salary of the rest is Rs. 7,800, the total number of workers in the workshop is
A.	22
B.	24
C.	18
D.	20
Answer» B. 24

Discussion

97.	The average of marks scored by the students of a class is 68. The average of marks of the girls in the class is 80 and that of the boys is 60. What is the percentage of boys in the class?
A.	65%
B.	70%
C.	40%
D.	60%
Answer» E.

Discussion

98.	The average of 5 numbers is 27. If one number is excluded, the average becomes 25. The excluded number is:
A.	30
B.	35
C.	25
D.	27
Answer» C. 25

Discussion

99.	The average of a collection of 20 measurements was calculated to be 56 cm . But later it was found that a mistake had occurred in one of the measurements which was recorded as 64 cm, but should have been 61 cm. The correct average must be:
A.	55.85 cm
B.	56.15 cm
C.	53 cm
D.	54.5 cm
Answer» B. 56.15 cm

Discussion

100.	The average of 30 results is 20 and the average of other 20 results is 30. What is the average of all the results?
A.	25
B.	50
C.	24
D.	48
Answer» D. 48

Discussion

Explore topic-wise MCQs in Maths.

The owner of a bike buys petrol for 3 years continuously at Rs 64, Rs 80 and Rs 320 per litre respectively. If he spends Rs 32,000 every year buying petrol, what is the average price per litre of petrol?

An examination was conducted for five subjects where the maximum marks for each subject was 100. Scored 82,97, 88 and 91 marks in 4 subjects respectively. If his total marks were 90 percent, then how many marks did he get in fifth subjects?

In a class of 66 students there are 33 girls. The average weight of these girls is 61 Kg and average weight of the full class is 66 kgs. What is the average weight of the boys of the class?

The average weight of 29 students is 40 kg. If the weight of teacher be included the average weight increased by 400 gms. The weight of the teacher is-

The average score obtained by Sandeep in 12 Tests is 25. Rumella has an average of 23 marks so far, but has competed in only 8 Tests. What average will Rumela have to earn in the remaining 4 Tests to be equal to Raghuveer's average?

Ram has 5 daughters. The average age of these 5 sisters is 28 years. The youngest one is 16 years old. What was the average age of the 4 daughters before the youngest one was born?

What is the age of A in a group of 6 students A, B, C, D, E and F whose average age is 16 years?Statement I: Total age of B and D is 30 yearsStatement II: Total age of E and F is 31 years.Statement III: Total age of A is 10 years.

The average marks of 42 students in an examination, were 64. Later it was found that the marks of three students were misread as 72, 58 and 44 instead of the actual marks 64, 42 and 26 respectively. What are the correct average marks?

The average of all prime numbers 21 to 50 is (round off to one decimal number)

The average weight of 14 children is 22 kg. If the weight of the teacher is also included, then the average weight becomes 23 kg. What is the teacher's weight?

In a certain year, the average monthly income of a person was Rs.3,400. For the first eight months of the years, his average monthly income was Rs. 3,160 and for the last five months, it was Rs.4,120. His income in the eighth month of the year was:

The average per day income of A, B and C is Rs. 450. If the average per day income of A and B be Rs. 400 and that of B and C be Rs. 430, the per day income of B is:

The present age of a father is 3 years more than three times the age of his son. Three years hence, father's age will be 10 years more than twice the age of the son. The father's age is:

The average weight of three men A, Band C is 84 kg. D joins them and the average weight of the four becomes 80 kg. If E whose weight is 3 kg more than that of D, replaces A, the average weight of B, C, D and E becomes 79 kg. The weight of A is:

of the three numbers, the first is 3 times the second and the third is 5 times the first. If the average of the three numbers is 57, the difference between the largest and the smallest number is:

If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55 and 60, then the average marks of all the students is?

The average of the marks obtained in an examination by 8 students was 51 and by 9 other students was 68. The average marks of all 17 students was?

There are three numbers in such a way that the average of the first and second numbers is 68 more than the average of the second and third number. Find the difference between first and the third number.

The average of x numbers is 48. If of the numbers are increased by 51 each and remaining are decreased by 71 each, then what is the new average?

The average weight of 24 students is 35 kg. If the weight of teacher is added the average increased by 400 gram. What is the weight of the teacher?

There are 45 male and 15 female employees in an office. If the mean salary of the 60 employees is Rs 4800 and the mean salary of the male employees is Rs 5000, then the mean salary of the female employees is

A man spends Rs. 1800 monthly on an average for the first four months and Rs. 2000 monthly for the next eight months and saves Rs. 5600 a year. His average monthly income is

Find the average of all prime numbers between 30 and 50.

In a class of 50 students there are 27 girls. The average weight of these girls is 45 kg and average weight of the full class is 49.6 kgs. What is the average weight of the boys of the class?

The average weight of Sudesh, Jyothi and Ritu is 89 kg. If the average weight of Sudesh and Jyothi be 98 kg and that of Jyothi and Ritu be 83 kg, then the weight of Jyothi is

The average of nine numbers in M and the average of three of these is P. If the average of remaining numbers is N, then

A party for 50 people was organized at their own expense. 48 of them paid Rs 950 each, while the other two paid Rs 1200 more than the group's average expenditure. The total expenditure incurred was.

A class has 90 students, of which 60 percent are girls and the rest are boys. Boys' average score in English is 30 percent higher than girls. If the average score of all students in English is 56, then what is the average score of only girls in English?

A batsman in his 20th innings make a score of 110 and there by increases his average by 4. What is his average after 20 innings?

Subjects, there were 9 boys and some girls. In a test, the mean score obtained by the boys was 13 while that obtained by the girls was 15. If the overall average was 14.28, what was the total number of students in the class?

The total average salary of 50 employees in a company is Rs 5,000. If there are 35 male employees among these employees whose average salary is Rs 6,000, then what will be the average salary of the remaining female employees?

The average of 6 numbers is 20. If a number is removed then average becomes 15. In place of removed number by adding a number 39 the average of new 6 number will be__

The average age of 30 students of a class is 15 years. A 20-year-old student left the class and replaced by two new students, whose age difference is 5 years. If the average age of all students is 15 years, then what will be ratio of young student to elder students.

What is the average of the squares of the first 19 natural numbers?

One boy from a group of eight boys left and a new boy with a weight of 56 kg joined the group, which resulted in an average weight of 2.5 kg has increased, what is the weight of the new boy?

What is the average of all numbers between 100 and 200 which are divisible by 13?

The average of 24 number is 65. The average of first 11 number is 67 and the average of last 10 number is 70. If the 12th Number is 13 less than the 13th number , and the 14th number is one more than the 13th number, then the average of 12th and 14th number is:

The average age of P, Q, R, and S is 30 years. How old is R?I. The sum of ages of P and R is 60 years.II. S is 10 years younger than R.

When the average age of husband, wife and their son was 42 years, the son got married and a child was born just one year after marriage. When the child turned to be 5 years, the average age of the family becomes 36 years. What was the age of daughter-in-law at the time of marriage?

What will be the average of the following set of scores?59, 84, 44, 98, 30, 40, 58

The average monthly income of A and B is Rs.15,050 , and the average monthly income of B and C is Rs.15,350 and the average income of A and C is Rs.15,200. The monthly income of A is.

a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all the numbers is:

The average of three consecutive odd numbers is 12 more than one third of the first of these numbers. What is the last of the three numbers?

The average of 5 consecutive natural numbers is M. If the next three natural numbers are also included, how much more than M will the average of these 8 numbers be?

The average monthly salary of the workers in a workshop is Rs. 8,500. If the average monthly salary of 7 technicians is Rs.10,000 and average monthly salary of the rest is Rs. 7,800, the total number of workers in the workshop is

The average of marks scored by the students of a class is 68. The average of marks of the girls in the class is 80 and that of the boys is 60. What is the percentage of boys in the class?

The average of 5 numbers is 27. If one number is excluded, the average becomes 25. The excluded number is:

The average of a collection of 20 measurements was calculated to be 56 cm . But later it was found that a mistake had occurred in one of the measurements which was recorded as 64 cm, but should have been 61 cm. The correct average must be:

The average of 30 results is 20 and the average of other 20 results is 30. What is the average of all the results?

What is the age of A in a group of 6 students A, B, C, D, E and F whose average age is 16 years?
Statement I: Total age of B and D is 30 years
Statement II: Total age of E and F is 31 years.
Statement III: Total age of A is 10 years.

The average of 24 number is 65. The average of first 11 number is 67 and the average of last 10 number is 70. If the 12^th Number is 13 less than the 13^th number , and the 14^th number is one more than the 13^th number, then the average of 12^th and 14^th number is:

The average age of P, Q, R, and S is 30 years. How old is R?
I. The sum of ages of P and R is 60 years.
II. S is 10 years younger than R.

What will be the average of the following set of scores?
59, 84, 44, 98, 30, 40, 58