4 men or 6 women can finish a work in 16 days . in how many days will 2 men and 9 women will finish the same work
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20 days because a men complete a work in 1 day and women complete a work in 2 days.
2 men = 2 days
9 women = 2 ✖ 9 =18
18+2=20 days
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