# 72% of 25 students are interested in mathematics. How many are not interested in mathematics?

**Solution:**

Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

Given: 72% of 25 students are interested in mathematics.

Therefore, Percentage of students who are not interested in Mathematics = (100 – 72)% = 28%

Therefore, the number of students who are not interested in mathematics

= 28% of the total number of students

= 28% of 25

= (28/100) × 25

= 28/4

= 7

Hence, the number of students who are are not interested in mathematics is 7.

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

**Video Solution:**

## 72% of 25 students are interested in mathematics. How many are not interested in mathematics?

NCERT Solutions Class 8 Maths Chapter 8 Exercise 8.1 Question 3

**Summary:**

72% of 25 students are interested in mathematics. The number of students who are not interested in Mathematics is 7.

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