Question

The ratio of boys to girls in a class is 5:7. There are 36 students in the class. How many more girls than boys are there?

Answer 1

Answer:

Let the no of boys be 5x

and no of girls be 7x

A/q

5x + 7x = 36

=> 12x = 36

=> x = 36/12 = 3

No. of boys = 5x

= 5 × 3

= 15

No. of girls = 7x

= 7 × 3

= 21

Here,

No. of girls > No. of boys

21 - 15 = 6

Hence, There are 6 more girls than boys .

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Answer 2

Answer: 15 and 21

Step-by-step explanation:

Let the ratio of b boys and girls be 5x and 7x

According to question-

no. of boys +no. of girls =total students

5x + 7x = 36

12x = 36

x = 36/12

x = 3

Therefore,

No. Of boys = 5x =5 * 3 =15

No. Of girls = 7x = 7 * 3 = 21