Question

The number girls and boys in a class are in ratio 7:5thera are 21 girls then class how many boys are thera

Answer 1

7x=21
x= 21/7=3
5x=5×3=15

Answer 2

hey here,

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

the no. of girls = 7x = 21

x = 3

the no. of boys = 3 * 5

= 15

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