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Question

Mathematics Question on Recalling Ratios and Percentages

7272 % of 2525 students are good in mathematics. How many are not good in mathematics?

Answer

It is given that 7272 % of 2525 students are good in mathematics.
Therefore,
Percentage of students who are not good in mathematics = (10072)(100 - 72) %
= 2828 %
∴Number of students who are not good in mathematics = 28100×25\frac{28}{100}×25
= 77
Thus, 77 students are not good in mathematics.