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 number of girls. What is the total class strength?​

Answer 1

Answer:

calculate yourself

Step-by-step explanation:

Let the no of girls be x

no of boys =8+x

then take ratio of

x/(x+8) = 7/5

then add no of boys and girls to get total strength

Answer 2

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 number of girls. What is the total class strength?

Answer:

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

According to the question

7x is 8 more than 5x

==> 5x + 8 = 7x

==> 5x -7x = -8

==> -2x = -8

==> 2x = 8

==> x = 8 / 2

==> x = 4

Number of boys = 7x

= 7 (4)

= 28

Number of girls = 5x

= 5 (4)

= 20

Hence, total strength of the class = 20 + 28 = 48