Question

A and B together can do a piece of work in 20/3 but B alone can do it in 10 days. how long will A take to do it alone ?

Answer 1

Answer:

Hi mate

Hope it was helpful

Please mark as brainliest

Your answer

A+ B takes 20/3 days

B alone 12 days

so total work = LCM(20/3,12) = 60

efficiency of A+B = 60/(20/3) = 9

efficiency of B= 60/12= 5

so A alone take 60/(9-5)= 60/4 = 15 days to complete the work