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20 women can do a job in 6 days. in how many days can 25 women do the same job |
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Answer» Step-by-step EXPLANATION: If 6 men can complete a work in 15 DAYS. It means the work needs 90 MAN-days for its completion. So 1 man does 1/90th of the work in a day, and 7 men can do 7/90th of the work in a day. If 10 WOMEN can complete a work in 15 days. It means the work needs 150 WOMAN-days for its completion. So 1 woman does 1/150th of the work in a day, and 5 women can do 5/150th or 1/30th of the work in a day. So 7 men and 5 women can do (7/90)+(1/30) = (7/90)+(3/90) = 10/90 = 1/9th of the work in a day. So they will complete the work in 9 days. |
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