A can do a piece of work in 12 days and B can do a piece of work in 15 days . how many days they will take to finish together
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Days taken by A=12
Days taken by B=15
Total work=LCM of 12 and 15
60 unit
Work done by A in 1 day =5 unit
Work done by B in 1 day=4 unit
Work done by both in 1 day = 9 unit
Days taken to complete 60 unit=60/9
6 days 6hrs answer
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