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Introduction to Percentage

Question 3 72...

Question

Question 3
72% of 25 students are good in mathematics. How many are not good in mathematics?

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Solution

Total number of students = 25
Number of good students in mathematics = 72% of 25
$= \frac{72}{100} \times 25 = 18$
$∴$ Number of students not good in mathematics= 25 - 18 = 7

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