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Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).

Ratios, Proportions & PercentagesPercentages

Of a class of 40 students, $20\%$ are girls. How many boys are in the class?

A.$8$
B.$20$
C.$32$Correct answer
D.$28$

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Quick fact: The number of boys in the class is $32$.

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