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

Time, Work & Distance ProblemsWork and Time

A washerman irons 4 shirts in 12 minutes. How many shirts does he iron in one hour?

A.$16$
B.$18$
C.$20$Correct answer
D.$24$

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Quick fact: The washerman irons $20$ shirts in one hour.

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