a alone can finish a piece of work in 12 days and B alone a alone can finish a piece of work in 12 days and B alone can do it in 15 days if both of came day of them work it together how much time will they take to finish it
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Answer:
Both can finish the work in 6 2/3 days
Step-by-step explanation:
Time taken by A to finish the work = 12 days
Time taken by B to finish the work = 15 days
Work done by A in 1 day = ½
Work done by B in 1 day = 1/15
Work done by (A+B) in 1 day = (1/12+1/15)=9/30=3/20
Time taken by (A + B) to finish the work 20/3 days, i.e., 6 2/3 days.
Hence, both can finish the work in 6 2/3 days.
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