Multiple Choice Questions

45 people take 18 days to dig a pond If the pond would have to be dug in 15 days then the number of ...........

Quantitative Aptitude (CDS) Time and work

45 people take 18 days to dig a pond. If the pond would have to be dug in 15 days, then the number of people to be employed will be

M₁ = 45, D₁ = 18 , M₂ = X, D₂ = 15
By the formula,
M₁D₁ = M₂D₂
⇒ X=(45×18)/15
= 54

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