Discussion

Explanation:

When M1 men can complete W1 work in Ddays while M2 men can complete W2 work in D2 days, then

∴ M1D1W1 = M2D2W2

Now, 4 men can reap 80 hectares in 48 days, and 24 men reap 'x' hectares in 30 days.

⇒ 4×4880 = 24×30x

⇒ 4×4824×30 = 80x

⇒ x = 300

Hence, 300.

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