Question

In a class 70% were boys. If the numbers of boys are 35, how many girls were there ?​

Answer 1

15 girls

Explanation:

Let the number of people in the class be x

70% = 0.70

0.70x = boys

So...

0.70x = 35

Divide both sides by 0.70...

x = 50

There are 50 people in the class

The number of girls is the number of boys minus the number of boys

50 - 35 = 15

There are 15 girls

-Chetan K