210 men working 12 hours a day can finish a job in 18 days.How many men are required to
finish the job in 20 days working 14 hours a day?
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Step-by-step explanation:
210 men can complete a work in 12 hours in 18 days means they worked for (12×18) hours.
so, by inverse variations,
= 210x12x18
= 20x14
= 162 days
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