450 + Mcqs in Average Page 4 McqOptions

151.	The average of 5 consecutive numbers is 50%, then difference between 'product of largest and smallest number' with 'product of fourth and second number' is
A.	3
B.	-3
C.	0
D.	10
Answer» C. 0

Discussion

152.	The average of 44 consecutive odd numbers is 144.What is the largest number?
A.	189
B.	191
C.	187
D.	193
Answer» D. 193

Discussion

153.	The average of 4 terms is 30 and the Ist term is of the sum of the remaining terms. What is the first term?_x005F_x000D_
A.	60
B.	30
C.	40
D.	20
Answer» C. 40

Discussion

154.	The average of 41 consecutive odd numbers is 49. What is the largest number.
A.	89
B.	91
C.	93
D.	95
Answer» B. 91

Discussion

155.	The average of 26 numbers is 37. One more number is added and the new average becomes 41. What is that new number?_x005F_x000D_
A.	140
B.	145
C.	146
D.	147
Answer» C. 146

Discussion

156.	The average of 26,29,n,35 and 43 lies between 25 and 35. If n is always an integer and greater than the average Â of the given integers then the value of n is :
A.	33<47
B.	34<43
C.	33<42
D.	None of these
Answer» D. None of these

Discussion

157.	The average of 21 numbers is 12. The average of the first 11 numbers is 9 and the average of the last 11 numbers is 15. What is the value of the middle number?
A.	10
B.	11
C.	12
D.	13
Answer» D. 13

Discussion

158.	The average of 19 consecutive even integers is 50. The highest of these integers is
A.	88
B.	68
C.	126
D.	100
Answer» C. 126

Discussion

159.	The average of 15 numbers is 7. If theÂ average of the first 8 numbers is 6.5 and the average ofÂ the last 8 numbers is 8.5 then middle number is
A.	10
B.	23
C.	13
D.	15
Answer» E.

Discussion

160.	The average of 12 numbers is 35. If four numbers 20, 27, 15 and 29 are removed then what will be the average of remaining numbers?
A.	41.125
B.	49.5
C.	52.5
D.	38.375
Answer» B. 49.5

Discussion

161.	The average of 10 numbers is X and one of the number is 38. If 38 is replaced with 19, then what will be the new average?
A.	Xâ€“ (1/2)_x005F_x000D_
B.	XÂ â€“ (1/19)_x005F_x000D_
C.	XÂ â€“ (19/10)_x005F_x000D_
D.	XÂ â€“ (19/9)
Answer» D. XÂ â€“ (19/9)

Discussion

162.	The average of 11 numbers is 10.9. If the average of the first six numbers is 10.5 and that of the last six numbers is 11.4, then the middle number is :
A.	10.5
B.	11.5
C.	12.5
D.	13.5
Answer» C. 12.5

Discussion

163.	The average of 100 items was found to be 30 . If at the time of calculation , two items were wrongly taken as 32 and 12 instead of 23 and 11 , then the correct average is
A.	29.8
B.	29
C.	29.9
D.	29.5
Answer» D. 29.5

Discussion

164.	The average of 10 numbers is 30. If at the time of calculation one number was wrongly taken as 36 instead of 69, then what will be the correct average?
A.	33
B.	33.3
C.	36
D.	39
Answer» C. 36

Discussion

165.	The average monthly salary of 20 employees in an organisation is Rs. 1500. If theÂ manager's salary is added, then the average salary increases by Rs. 100. What is theÂ manager's monthly salary ?
A.	3600
B.	3700
C.	3800
D.	3900
Answer» B. 3700

Discussion

166.	The average monthly salary of 24 employees in an organisation is Rs. 1500. If the manager's salary is added, then the average salary increases by Rs. 400. What is the manager's monthly salary ?
A.	Rs. 8840
B.	Rs. 11,500
C.	Rs. 12,800
D.	Rs. 9450
Answer» C. Rs. 12,800

Discussion

167.	The average monthly salary of 19 members of a group is Rs. 16000. If one more members whose monthly salary is Rs. 20000 has joined the group, then the averageÂ salary of the group is
A.	Rs.18250
B.	Rs.16200
C.	Rs.18000
D.	Rs.16250
Answer» C. Rs.18000

Discussion

168.	The average marks of a student in 7 subjects is 85. His average marks in 6 subjects except English is 83. What is his marks inÂ English ?
A.	97
B.	98
C.	92
D.	93
Answer» B. 98

Discussion

169.	The average marks of 56 students is shown as 60. It includes a wrong entry of 92 marks instead of 29 marks. The correct average is _____ .
A.	58.875 marks
B.	61.125 marks
C.	63.375 marks
D.	56.625 marks
Answer» B. 61.125 marks

Discussion

170.	The average marks of 40 students in an examination was 34. It was later found that the marks of one student had been wrongly entered as 62 instead ofÂ 26. what is the correct average?
A.	33.1
B.	33.3
C.	33.5
D.	33.7
Answer» B. 33.3

Discussion

171.	The average marks of 50 students in an examination was 65. It was later found that the marks of one student had been wrongly entered as 83 instead ofÂ 38. The correct average is?
A.	63.9
B.	64.5
C.	64.7
D.	64.1
Answer» E.

Discussion

172.	The average marks of 45 students is shown as 65. It includes a wrong entry of 84 marks instead of 48 marks. The correct average is:
A.	65.8 marks
B.	67.4 marks
C.	62.6 marks
D.	64.2 marks
Answer» E.

Discussion

173.	The average marks of 40 students in an examination was 25. It was later found that the marks of one student had been wrongly entered as 73 instead ofÂ 37. What is the value of correct average?
A.	24.3
B.	24.1
C.	24.5
D.	24.7
Answer» C. 24.5

Discussion

174.	The average marks of 10 students in an examination was 25. It was later found that the marks of one student had been wrongly entered as 34 insteadÂ of 43. What is the correct average?
A.	25.5
B.	24.1
C.	24.5
D.	25.9
Answer» E.

Discussion

175.	The average marks of 18 students in an examination was 60. It was later found that the marks of one student had been wrongly entered as 63 instead ofÂ 36. The correct average is:
A.	59
B.	59.5
C.	58
D.	58.5
Answer» E.

Discussion

176.	The average marks obtained by a group of 16 students was 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.5. What was the average marks obtained by the student who left and the one who joined?
A.	10
B.	11
C.	8
D.	9
Answer» E.

Discussion

177.	The average marks obtained by Raghav in 12 tests is 24. Zubeida has maintained an average of 23 so far but has taken only 9 of the tests. If each test is out of 30, at least how much Zubeida score in any one of the remaining three tests to still have a chance to match Raghav's performance?
A.	21
B.	22
C.	20
D.	19
Answer» B. 22

Discussion

178.	The average marks obtained by a group of 10 students were 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.6. What were the average marks obtained by the student who left and the one who joined?_x005F_x000D_
A.	14
B.	15
C.	16
D.	23
Answer» B. 15

Discussion

179.	The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of theÂ remaining students is
A.	35
B.	45
C.	55
D.	65
Answer» C. 55

Discussion

180.	The average height of A, B and C is 148 cm. If the average height of A and B is 136 cm and that of B and C is 125 cm, then what is the height (in cm) of B?
A.	56
B.	78
C.	112
D.	130
Answer» C. 112

Discussion

181.	The average marks in science subject of a class of 20 students is 68. If the marks of two students were misread as 48 and 65 of the actual marks 72 and 61 respectively, then what would be the correct average?
A.	68.5
B.	69
C.	69.5
D.	70
Answer» C. 69.5

Discussion

182.	The average height of 50 bats is 126 cm. Some bats of average height 120 cm are removed. If the new average height is 130 cm, then how many bats are remaining?_x005F_x000D_
A.	12
B.	20
C.	16_x005F_x000D_
D.	30
Answer» E.

Discussion

183.	The average height of 40 sticks is 154 cm. Some sticks of average height 160 cm are taken out. If the new average height is 150 cm, then how many sticks are remaining?_x005F_x000D_
A.	12
B.	16
C.	24
D.	28
Answer» D. 28

Discussion

184.	The average expenditure of the hotel when there are 10 guests is Rs. 60 per guests and the average expenditure is Rs.40 when there are 20 Guests. If it is known that there are some fixed expenses irrespective of the number of guests then the average expenditure per guest Â whe there are 40 guests in the hotel.
A.	Rs. 30
B.	Rs. 25
C.	Rs. 20
D.	can't be determined
Answer» B. Rs. 25

Discussion

185.	The average cost of 4 items in a shopping list is Rs 1,250. If one more item whose cost is Rs 2,000 is added to the list what will be the new average (inRs)?
A.	1100
B.	1500
C.	1400
D.	1250
Answer» D. 1250

Discussion

186.	The average cost of 5 items in a shopping list is Rs 650. If one more item whose cost is Rs 1400 is added to the list what will be the new average (inÂ Rs)?
A.	775
B.	875
C.	725
D.	825
Answer» B. 875

Discussion

187.	The average height of 30 boys out of a class of 50 is 160 cm. If the average height of the remaining boys is 165 cm, the average height of the wholeÂ class (in cm) is:
A.	161
B.	162
C.	163
D.	164
Answer» C. 163

Discussion

188.	The average (arithmetic mean) amount of savings of ten students is Rs. 600. Three of the students have no savings at all and each of the others have atÂ least Rs. 250 including Nihar, who has exactly Rs. 1300. The largest amount, in Rs., that any one student could have is
A.	3250
B.	3450
C.	3650
D.	3850
Answer» C. 3650

Discussion

189.	The average age of the boys in a class is 16 years and that of the girls is 15 years. The average age for the whole class is :
A.	15
B.	20
C.	21
D.	data inadequate
Answer» E.

Discussion

190.	The average age of the district level hockey team of eleven is 22 years.The average age gets increased by 1 year when the coach age is also included.what is the age of the coach ?
A.	33 yrs
B.	34 yrs
C.	35 yrs
D.	36 yrs
Answer» C. 35 yrs

Discussion

191.	The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years, The ratio of the number of boys to the number of girls in the class is :
A.	0.043055555555556
B.	0.085416666666667
C.	0.12777777777778
D.	0.17013888888889
Answer» C. 0.12777777777778

Discussion

192.	The average age of a husband and his wife was 23 years at the time of their marriage. After Â five years they have a one-year old child. The average age of the family now is :
A.	25
B.	23
C.	19
D.	18
Answer» D. 18

Discussion

193.	The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is :
A.	15
B.	20
C.	23
D.	24
Answer» C. 23

Discussion

194.	The average age of a class is 19 years. While the average age of girls is 18 and that of boys is 21. If the number of girls in the class is 16, Find the number of Boys in the class?
A.	12
B.	10
C.	8
D.	6
Answer» D. 6

Discussion

195.	The average age of 80 boys in a class is 15 years. The average age of a group of 15 boys in the class is 16 years and the average age of another 25 boys in the class is 14 years. What is the average age of the remaining boys in the class?
A.	15.25 years
B.	14 years
C.	14.75 years
D.	Cannot be determined
Answer» B. 14 years

Discussion

196.	The average age of 7 boys is increased by 1 year when one of tem whose age is replaced by a girl. What is the age of the girl ?
A.	33 yrs
B.	27 yrs
C.	21 yrs
D.	29 yrs
Answer» E.

Discussion

197.	The average age of 36 students in a group is 14 years. When teacher's age is included to it, the average increases by one. What is the teacher's age in years ?
A.	35 years
B.	45 years
C.	51 years
D.	54 years
Answer» D. 54 years

Discussion

198.	The average age of 24 students is 12 years. It was observed that while calculating the average age, the age of a student was taken as 14 years instead ofÂ 8 years. What will be the correct average age (in years)?
A.	11.25
B.	11.5
C.	11.75
D.	12.25
Answer» D. 12.25

Discussion

199.	The average age of 15 students of a class is 15 years. Out of these, the average ageÂ of 5 students is 14 years and that of the other 9 students is 16 years, The age of theÂ 15th student is :
A.	11
B.	12
C.	13
D.	14
Answer» B. 12

Discussion

200.	Sriram was conducting an experiment in which the average of 11 observations came to be 92, while the average of first five observations was 89, and that of the last five was 86. What was the measure of the 6th observation ?
A.	134
B.	137
C.	139
D.	141
Answer» C. 139

Discussion

Explore topic-wise MCQs in Arithmetic Ability.

The average of 5 consecutive numbers is 50%, then difference between 'product of largest and smallest number' with 'product of fourth and second number' is

The average of 44 consecutive odd numbers is 144.What is the largest number?

The average of 4 terms is 30 and the Ist term is of the sum of the remaining terms. What is the first term?_x005F_x000D_

The average of 41 consecutive odd numbers is 49. What is the largest number.

The average of 26 numbers is 37. One more number is added and the new average becomes 41. What is that new number?_x005F_x000D_

The average of 26,29,n,35 and 43 lies between 25 and 35. If n is always an integer and greater than the average Â of the given integers then the value of n is :

The average of 21 numbers is 12. The average of the first 11 numbers is 9 and the average of the last 11 numbers is 15. What is the value of the middle number?

The average of 19 consecutive even integers is 50. The highest of these integers is

The average of 15 numbers is 7. If theÂ average of the first 8 numbers is 6.5 and the average ofÂ the last 8 numbers is 8.5 then middle number is

The average of 12 numbers is 35. If four numbers 20, 27, 15 and 29 are removed then what will be the average of remaining numbers?

The average of 10 numbers is X and one of the number is 38. If 38 is replaced with 19, then what will be the new average?

The average of 11 numbers is 10.9. If the average of the first six numbers is 10.5 and that of the last six numbers is 11.4, then the middle number is :

The average of 100 items was found to be 30 . If at the time of calculation , two items were wrongly taken as 32 and 12 instead of 23 and 11 , then the correct average is

The average of 10 numbers is 30. If at the time of calculation one number was wrongly taken as 36 instead of 69, then what will be the correct average?

The average monthly salary of 20 employees in an organisation is Rs. 1500. If theÂ manager's salary is added, then the average salary increases by Rs. 100. What is theÂ manager's monthly salary ?

The average monthly salary of 24 employees in an organisation is Rs. 1500. If the manager's salary is added, then the average salary increases by Rs. 400. What is the manager's monthly salary ?

The average monthly salary of 19 members of a group is Rs. 16000. If one more members whose monthly salary is Rs. 20000 has joined the group, then the averageÂ salary of the group is

The average marks of a student in 7 subjects is 85. His average marks in 6 subjects except English is 83. What is his marks inÂ English ?

The average marks of 56 students is shown as 60. It includes a wrong entry of 92 marks instead of 29 marks. The correct average is _____ .

The average marks of 40 students in an examination was 34. It was later found that the marks of one student had been wrongly entered as 62 instead ofÂ 26. what is the correct average?

The average marks of 50 students in an examination was 65. It was later found that the marks of one student had been wrongly entered as 83 instead ofÂ 38. The correct average is?

The average marks of 45 students is shown as 65. It includes a wrong entry of 84 marks instead of 48 marks. The correct average is:

The average marks of 40 students in an examination was 25. It was later found that the marks of one student had been wrongly entered as 73 instead ofÂ 37. What is the value of correct average?

The average marks of 10 students in an examination was 25. It was later found that the marks of one student had been wrongly entered as 34 insteadÂ of 43. What is the correct average?

The average marks of 18 students in an examination was 60. It was later found that the marks of one student had been wrongly entered as 63 instead ofÂ 36. The correct average is:

The average marks obtained by Raghav in 12 tests is 24. Zubeida has maintained an average of 23 so far but has taken only 9 of the tests. If each test is out of 30, at least how much Zubeida score in any one of the remaining three tests to still have a chance to match Raghav's performance?

The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of theÂ remaining students is

The average height of A, B and C is 148 cm. If the average height of A and B is 136 cm and that of B and C is 125 cm, then what is the height (in cm) of B?

The average marks in science subject of a class of 20 students is 68. If the marks of two students were misread as 48 and 65 of the actual marks 72 and 61 respectively, then what would be the correct average?

The average height of 50 bats is 126 cm. Some bats of average height 120 cm are removed. If the new average height is 130 cm, then how many bats are remaining?_x005F_x000D_

The average height of 40 sticks is 154 cm. Some sticks of average height 160 cm are taken out. If the new average height is 150 cm, then how many sticks are remaining?_x005F_x000D_

The average cost of 4 items in a shopping list is Rs 1,250. If one more item whose cost is Rs 2,000 is added to the list what will be the new average (inRs)?

The average cost of 5 items in a shopping list is Rs 650. If one more item whose cost is Rs 1400 is added to the list what will be the new average (inÂ Rs)?

The average height of 30 boys out of a class of 50 is 160 cm. If the average height of the remaining boys is 165 cm, the average height of the wholeÂ class (in cm) is:

The average (arithmetic mean) amount of savings of ten students is Rs. 600. Three of the students have no savings at all and each of the others have atÂ least Rs. 250 including Nihar, who has exactly Rs. 1300. The largest amount, in Rs., that any one student could have is

The average age of the boys in a class is 16 years and that of the girls is 15 years. The average age for the whole class is :

The average age of the district level hockey team of eleven is 22 years.The average age gets increased by 1 year when the coach age is also included.what is the age of the coach ?

The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years, The ratio of the number of boys to the number of girls in the class is :

The average age of a husband and his wife was 23 years at the time of their marriage. After Â five years they have a one-year old child. The average age of the family now is :

The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is :

The average age of a class is 19 years. While the average age of girls is 18 and that of boys is 21. If the number of girls in the class is 16, Find the number of Boys in the class?

The average age of 80 boys in a class is 15 years. The average age of a group of 15 boys in the class is 16 years and the average age of another 25 boys in the class is 14 years. What is the average age of the remaining boys in the class?

The average age of 7 boys is increased by 1 year when one of tem whose age is replaced by a girl. What is the age of the girl ?

The average age of 36 students in a group is 14 years. When teacher's age is included to it, the average increases by one. What is the teacher's age in years ?

The average age of 24 students is 12 years. It was observed that while calculating the average age, the age of a student was taken as 14 years instead ofÂ 8 years. What will be the correct average age (in years)?

The average age of 15 students of a class is 15 years. Out of these, the average ageÂ of 5 students is 14 years and that of the other 9 students is 16 years, The age of theÂ 15th student is :

Sriram was conducting an experiment in which the average of 11 observations came to be 92, while the average of first five observations was 89, and that of the last five was 86. What was the measure of the 6th observation ?