A can do a piece of work in 10 days and b can do it in 12 days, a and b can do it how many days
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No. of days taken by a to do the work = 10
A's one day work = 1/10
No. of days taken by b to do the work = 12
B's one day work = 1/12
Together....
1/12 + 1/10 = 11/60
No. of days = 60/11 days
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