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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?

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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