a Kisi Kaam Ko A=12 Din Mein B=16 me or C=20 din me Karte Hain yeah tino sath kaam karna Shuru Karte Hain 4 Din Baad A or B kaam Chhod Kar Chale Jaate hai shesh kaam ko pura karne Kitne Din ka samay lagega
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total unit of work be 240 units
A's efficiency is 240/12 =20 units/day
B's efficiency is 240/16 =15 units/day
C's efficiency is 240/20 =12 units/day
4 din ka total kaam = (20+15+12)*4= 188
ab bacha hua kaam hai = 240-188 = 52 units ..ye kaam c karega 52/12 =4.33 days me
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