Question

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

Answer 1

Answer:

48 students

Step-by-step explanation:

ratio= 7:5

girls= 5x

boys= 7x = 8+5x (given)

7x-5x = 8

    2x= 8

      x= 8/2

      x= 4

girls= 5x= 5 x 4

                =20 girls

boys= 7x= 7 x 4

                 =28 boys

∴total= 20 + 28 =

          48 students

Answer 2

QUESTION :

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

ANSWER :

Let the number of boys and girls be 7x and 5x

7x = 5x + 8

7x - 5x = 8

2x = 8

x = 8 ÷ 2

x = 4

Boys = 7x = 7 × 4 = 28

Girls = 5x = 5 × 4 = 20

Therefore total strength is 28 + 20 = 48