Question

72% of 25 students are interested in mathematics. how many are not interested in mathematics?​

Answer 1

Answer:

72/100 into 25 equal to 18 student so 7 student were not interested in mathematics

Answer 2

To Find:-

Number of students not interested in mathematics.

Given:-

72% of the students are interested in maths number of students = 25

solution:-

Method 1

If 72% of 25 are interested in maths

Then, number of students interested in maths

$\implies\dfrac{72}{100} \times 25$

$\implies \dfrac{72}{4}$

= 18

Then, number of students doesn't like Mathematics =

Total number of students - Number of students interested on Mathematics

= 25 - 18

= 7

$\therefore$ 7 students are not interested on Maths.

Method 2

Given:-

Percentage of students who like maths = 72%

Now, percent of students not interested in maths = ( 100 - 72 )%

= 28 %

Now, 28% students doesn't like maths

The number of student doesn't like maths

28% of 25

$\implies\dfrac{28}{100} \times 25$

$\implies \dfrac{28}{4}$

= 7 students

Hence, 7 students are not interested on Maths.

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