If 5 men and 9 women can do a piece of work in 19 days, then in how many days will 3 men and 6 women do the same work?

If 5 men and 9 women can do a piece of work in 19 days, then in how many days will 3 men and 6 women do the same work? Correct Answer 15

Hints: short method Time = Men1 × women1 × Time1 / Men1 × women2 + Men2 × women1 = 5 × 9 × 19/ 5 × 6 + 9 × 3 = 15
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