The average age of a class of 80 girls was 20 years, the average age o – McqOptions

MCQOPTIONS

1.	The average age of a class of 80 girls was 20 years, the average age of 20 of them was 22 years and that of another 20 was 24 years. Find the average age of the remaining girls.
A.	17 years
B.	19 years
C.	21 years
D.	15 years
Answer» B. 19 years

Discussion

No Comment Found

Related MCQs

The return loss is given as 12 decibel. Calculate the reflection coefficient.
The transmission coefficient is given by 0.65. Find the return loss of the wave.
The radiation resistance of an antenna having a power of 120 units and antenna current of 5A is
The reflection coefficient is 0.5. Find the return loss.
The power transmitted by a wave with incident power of 16 units is(Given that the reflection coefficient is 0.5)
The technique according to which the company can lengthen product line beyond the current carrying range of products is classified as
While decisions of any variety can occur in major depressive disorder, the most common delusions are -
The curved surface of a cylinder is 264 m2. Its volume is 924 m3. The height of the cylinder must be -
A photograph has to be taken of the management committee. There are seven chairs. The centre chair can only be occupied by the president and left extreme chair by the secretary. In how many combinations can the photograph be taken?
Treatment of choice for Obsessive-Compulsive disorder is: