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Percentage

If 15 out of ...

Question

If $15$ out of $20$ students passed in a test, then the percentage of students who have failed is .

A

25%

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B

75%

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C

50%

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D

10%

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Solution

The correct option is A 25%
Given, $15$ out of $20$ students have passed the test.
So, $(20 - 15) = 5$ students must have failed the test.

Percentage of students who have failed
$= \frac{Number of students failed}{Total number of students} \times 100 = \frac{5}{20} \times 100 = 25 %$

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