Question

64% of 25 students are interested in mathematics. How many are not interested in mathematics?

Answer 1

Total =100 percent
Interested=64percent
Not interested =100-64=36 percent
Total students=25
Interested in maths =64/100*25
Not interested =36/100*25=9 people are not interested in maths

Answer 2

Final Answer:

The number of students who are not interested in mathematics is

Given:

The 64% of 25 students are interested in mathematics.

To Find:

The number of students who are not interested in mathematics is to be calculated.

Explanation:

The concept of percentage is followed in figuring out the solution here.

The percentage is the comparative number of the actual measurement of any physical quantity in the scale of "per hundred" of its considered total.

The percentage of students marked by 64% indicates the 64 students per hundred of the total students.

Step 1 of 2

As per the given statement in the problem, the number of students who are interested in mathematics is

$=64\%\times 25\\=0.64\times 25\\=16$

Step 2 of 2

Using the information in the given problem, the number of students who are not interested in mathematics is

$=25-16\\=9$

Alternative Step:

The number of students who are not interested in mathematics can also be found in the following way.

$100-64)\%\times 25\\=36\%\times 25\\=0.36\times 25\\=9$

Therefore, the required correct answer is 9 students are not interested in mathematics.

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