Question

The ratio of boys to girls in the class is 5:7. There are 36 children in the class. How many more girls than boys are there in the class? (Show your working out)

Answer 1

Answer:

The ratio of boys to girls was 5:7.

The ratio of boys to girls was 5:7.Let us assume there as 5x boys and 7x girls. So the total number of students = 5x+7x = 12 x or 36.

The ratio of boys to girls was 5:7.Let us assume there as 5x boys and 7x girls. So the total number of students = 5x+7x = 12 x or 36.Or x = 36/12 = 3.

The ratio of boys to girls was 5:7.Let us assume there as 5x boys and 7x girls. So the total number of students = 5x+7x = 12 x or 36.Or x = 36/12 = 3.So there are 5*3 = 15 boys and 7*3 = 21 girls. Answer.

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Step-by-step explanation:

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Answer 2

There are 6 more girls than boys in the class.

Given:

The ratio of boys to girls in the class is 5:7.

There are 36 children in the class.

To Find:

We have to find how many more girls than boys are there in the class.

Solution:

This is a simple problem for ratio.

Let us tackle this question.

We can simply solve this question as follows.

According to the question,

There are 36 children in the class.

therefore,

The total number of boys in the class is

= $36*\frac{5}{(5+7)}$

= $36*\frac{5}{12}$

= $3*5$

= $15$

And, the total number of girls in the class is

= $36*\frac{7}{(5+7)}$

= $36 * \frac{7}{12}$

= $3*7$

= $21$

Hence, there are (21-15)= 6 more girls than boys in the class.

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