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09/08/2021 10:57 am
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72% of 25 students are good in mathematics. How many are not good in mathematics?
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09/08/2021 11:00 am
It’s given that 72% of 25 students are good in mathematics
So, the percentage of students who are not good in mathematics = (100 – 72)%
= 28%
Here, number of students who are good in mathematics = 72/100 x 25
= 18
Thus, the number of students who are not good in mathematics = 25 – 18
= 7
28% of 25 = 28/100 x 25 = 7
Therefore, 7 students are not good in mathematics.