45 people take 18 days to dig a pond. If the pond would

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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 the employed will be ?

Given, M₁ = 45, D₁ = 18, M₂ = ? , D₂ = 15
By using the formula,
M₁D₁ = M₂D₂
∴ M₂ = M₁D₁/D₂
⇒ M₂ = (45 x 18)/15 = 3 x 18
⇒ M₂ = 54