Let 1 womans 1 day work = x.
Then, 1 mans 1 day work = x/2 and 1 childs 1 day work x/4.
So, (3x/2 + 4x + + 6x/4) = 1/7
28x/4 = 1/7 => x = 1/49
1 woman alone can complete the work in 49 days.
So, to complete the work in 7 days, number of women required = 49/7 = 7.
Answered :- 2023-09-07 09:12:33
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