Question

The number of boys &girls in class are in the ratio7: 5. The number of boys is 8 more than the number of girl,. What is the total class strength

Answer 1

answer is 48

solution:difference of 8

and the ratio has difference of 2

So 8 ÷ 2 is 4

then 4×7 is 28

4×5 is 20