Question

Q1. 72% of 25 students are good in mathematics. how many are not good in mathematics? ​

Answer 1

Answer:

28%

given: 25 student

percentage of students good in mathematics:72%

percentage of students not good in mathematics : 100%-72%=28%

answer :28%

Answer 2

As per the details provided in the question.

In the above question, we have the details as follow.

The given data is 72% of 25 students

We have to find how many are not good at mathematics.

Here we have to use the percentage to get the number of students not good in mathematics.

Thus, the percentage of student not good in mathematics is as follow,

$=(100-72)\%\times25\\=28\% of 25$

Now the number of students,

$=\frac{28}{100} \times 25=7$

Hence 7 students are not good at mathematics.