1.

15 men ,working 8 hours a day, can build a wall in 20 days , in how many days will 20 men build the same wall working 5 hours a day?

Answer»

W/ WF x T


W is workdone

WF is workforce

T is TIME


W/15x8x20 = W/20x5xT

20x5xT = 15x8x20

T = 24 DAYS



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