Eight men, ten women and six boys together can complete a piece of work in eight days. In how many days can 20 women complete the same work if 20 men can complete it in 12 days?	Answers
A) 33m B) 77m C) 66m D) 22m E) 88m
Let the number of units which can be completed by each man, each women and each boy be m/day, w/day and b/day respectively.   Work = 8(8m + 10w +6b)units = 12(20m)   10w +6b = 22m   b is unknown.   We cannot find the relation between m and w.   We cannot answer the question.   Answer: 22m
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Eight men, ten women and six boys together can complete a piece of work in eight days. In how many days can 20 women complete the same work if 20 men can complete it in 12 days?