6 men or 8 women can do a work in 18 days. How many days will it require to complete the whole work if 3 men and 5 women work together?

6 men or 8 women can do a work in 18 days. How many days will it require to complete the whole work if 3 men and 5 women work together? Correct Answer 16 days

shortcut method: time required = (M1*W1*T) /(( M1*W2) + (M2*W1) Here M for Men W for Women T for Time. = (6*8*18)/((6*5) + (8*3)) = 16 days.
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