Question

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​

Answer 1

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.