Question

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

Answer 1

Answer:

Total strength 48

Step-by-step explanation:

1. The ratio difference is (7-5)=2
2. So 2 = 8 person, then 1 = 4 person
3. 7×4 : 5×4 = 28:20
4. Total 48 class strength

Answer 2

Step-by-step explanation:

Let the no. of boys be 7x and girls be 5x.

Therefore, Total no. of students are:

=> 7x - 5x = 8

=> 2x = 8

=> x = 8/2

=> x = 4

Therefore, boys = 7x = 7 × 4 = 28

girls = 5x = 5 × 4 = 20

Therefore, total class strength = 28 +20

= 48