MathematicsThe number of boys and girls in a class are in ratio 7:5.The number of boys is 8 more than the number of girls. What is the total class strength?

The number of boys and girls in a class are in ratio 7:5.The number of boys is 8 more than the number of girls. What is the total class strength?

A
25
B
28
C
30
D
48

Solution:

Let the number of boys be 7x and that of girls be 5x
According to the given condition we have
Number of boys = Number of girls +8

Therefore number of boys=

Number of Girls =

So, total number of children in the class =

Hence, the class strength is

Hence, Option (4) is the correct answer.

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