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Solving by Unitary Method :

12 men can do a work in 24 days,
1 man will do it in (24×12) = 288 days (one men=more days required)
8 men will do it in 288/8 = 36 days

Hence, 8 men will complete the work in 36 days.
1 5 1
mujhe pta h apka ans sahi h. lekin copy n ho isliye aise kiya h.
Total men=12, days=24 so 1persn can do work in 12*24=288 nw 8persn can do work in 288/8=36days