If 12 persons working 12 hours a day dig 12 meters of a tunnel in 12 days how many men are required to dig additional 4 meter of the tunnel (of the same dimension) given that they work 4 hours a day for 4 day?
ATQ, we can say that Given: 12 persons working 12 hours a day dig 12 meters of a tunnel in 12 day Let the number of men required be x (12 × 12 × 12)/12 = (x × 4 × 4)/4 x = 36 ∴ Number of men required be 36
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