Question

In a school, the ratio of number of boys to the number of girls is 9:7. Find the number of boys if the total number of students is 3200.

Answer 1

Let x be the common multiple of the ratio.

The ratio of number of boys to the number of girls

= 9:7

Total number of students = 3200

No of boys = 9x

No of girls = 7x

So the equation will be,

9x + 7x = 3200

16x = 3200

x = 3200/16

x = 200

No of boys = 9x = 9(200) = 1800

Answer 2

Answer:

no of boy=1800

no of girls=1400