6 boys can complete a piece of work in 16 h. In how many

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6 boys can complete a piece of work in 16 h. In how many hours will 8 boys complete the same work ?

1. 10
2. 8
3. 12
4. 14

Correct Option: C

Given, M₁ = 6, M₂ = 8 , T₁ = 16 h,
and T₂ = ?, W₁ = W₂ = 1
According to the formula.
M₁T₁W₂ = M₂T₂W₁
∴ 6 x 16 x 1 = 8 x T₂ x 1
∴ T₂ = 16 x 6/8 = 2 x 6 = 12 h