10 men can do a piece of work in 20 days. 10 women can do the same amount of work in 30 days. If there is 25% increase in the efficiency of man and 12.5% increase in the efficiency of woman, time taken by them together to finish the same work is?
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10 men can work in 25 days
10 women can do the same work in 30 days
there is 25% increase in efficiency of man
and 12.5% increase in the efficiency of women
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