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10 men can complete a piece of work in 15 days and 15 women can complete the same work in 12 days. If all the 10 men and 15 women work together,
in how many days will work get completed?

A.6
B.7 2/3
C.6 2/3
D.6 1/3
Answer and Feedback
Answer:C
Feedback:If A can complete a work in x days and B can complete the same work in y days,
then, both of them together can complete the work in x y/ x+ y days.
Here, men’s working days can be taken as A and that of women as B
Then, 15 × 12/27 = 6 2/3 days.

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