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10 men can make a wall in 8 days. How many men required to complete the same work in half days?

80
100
120
160

Correct Answer: 160

Explanation:

Given M₁ = 10
D₁ = 8, M₂= ? and D₂ = 1/2
From M₁ D₁ = M₂ D₂
⇒ 10 x 8 = M₂ x 1/2
⇒ M₂= 10 x 8 x 2
∴ M₂ = 160

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