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A class has 40 pupils. 2/5 of them are boys, how many are girls?

5 parts =40

1 part=?

2 part=?

3 part=?

1
by fidelity6

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5 parts =40

1 part=?

2 part=?

3 part=?

by fidelity6

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Boys: 16

First, multiply 2/5 by 40.

2/5 X 40/1 = 80/5

Then, divide it.

80 ÷ 5 = 16

*The answer will be the number of boys.

Subtract the number of boys by the total number of students which is 40.

40 - 16 = 24

*The answer will be the number of girls.

Checking:

24 + 16 = 40

40 = 40

-KookEin

Hi! Sad to say but, I don't understand the thing with the 'parts'. Good luck with it. :)