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A stock of food is enough for 240 men for 48 days. How long will the same stock last for 160 men?

54 days
60 days
64 days
72 days

Correct Answer: 72 days

Explanation:

M₁ = 240, D₁ = 48, M₂ = 160 and D₂ = ?
According to the formula,
M₁D₁ = M₂D₂
⇒ 240 x 48 = 160 x D₂
∴ D₂= (240 x 48)/160 = 72

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