Discussion

Explanation:

Let the work to be done = 24 units.

∴ Efficiency of a man = 24/6 = 4 units/day
∴ Efficiency of a woman = 24/8 = 3 units/day
∴ Efficiency of a boy = 24/24 = 1 units/day

Let x boys assist 2 men and 1 woman to complete the work in 2 days.

∴ (2m + 1w + xb) × 2 = 24

⇒ (2 × 4 + 1 × 3 + x × 1) = 12

⇒ x = 1

Hence, option (c).

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