Question

70% of students in a school are boys. If the number of girls is 240.How many boys are there in the school?

Answer 1

Answer:

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Answer 2

There are 560 boys in the school.

Given:

70% of students are boys.

The number of girls is 240.

To Find:

We have to find the number of boys in the school.

Solution:

70% of students are boys.

Therefore, (100-70)=30% of students are girls.

Let us assume, there are x students in the school.

Then,

         $\frac{30x}{100} = 240$

      ⇒$\frac{3x}{10} = 240$

      ⇒$x=800$

Then, the total number of boys in the school is (800-240)=560.

Hence, there are 560 boys in the school.

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