Question

the ratio of girls to boys in a school is 2:7. if the number of boys is 630, find the number of girls in the school

Answer 1

Answer:

Boys = 630

Girls = *245*

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Step-by-step explanation:

no. of boys = 2x

no. of girls = 7x

ATQ

no of boys = 630

2x = 630

630/2

315.

x = 315

Now,

no. of girls = 7x

7 × 315

= 2205.

then

7+2 = 9

2,205÷9

= 245.

Answer 2

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Let the number of girls is 2x and the number of boys is 7x

Now number of boys is 630

then 7x = 630 => x = 630/7 => x = 90

Hence number of girls is 2 × 90 = 180

The number of girls in school is 180