ATQ, Let us assume that khushi alone can complete the work in 'k' days khushi one day work is (1/k) Amisha one day work is = (150/100) × (1/k) = (3/2k) w(3/2k) + (w + 12) (1/k) = 1.......(1) (3w/2k) : (w + 12)/k = 3:4...........(2) From (1) and (2) we will get w = 12, and k = 42 so Amisha can complete the work in 28 days and khushi in 42 days. (1/28) + (1/42) = (5/84) or (84/5) or 16(4/5)
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