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# Out of 50 children in a class, 20 are boys. Then the percentage of girls is

(a) 60

(b) 30

(c) 50

(d) 66 2/3

**Solution:**

Given, there are 50 children.

Out of 50, 20 are boys.

We have to find the __percentage__ of girls.

Percentage of girls = (number of girls / total number of children) × 100

Number of girls = total children - number of boys

= 50 - 20

= 30

Percentage of girls = (30/50) × 100

= 3(20)

= 60%

Therefore, the required percentage is 60%

**✦ Try This: **Out of 70 children in a class, 30 are boys. Then the percentage of girls is

**☛ Also Check: **NCERT Solutions for Class 7 Maths Chapter 8

**NCERT Exemplar Class 7 Maths Chapter 7 Sample Problem 2**

## Out of 50 children in a class, 20 are boys. Then the percentage of girls is (a) 60 (b) 30 (c) 50 (d) 66 2/3

**Summary:**

Out of 50 children in a class, 20 are boys. Then the percentage of girls is 60.

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