Question

A and B working together can finis a piece of work in 6 days, while A alone can do it in
9 days, How much time will B alone take to finish it?​

Answer 1

Answer:

A+B do finish the work in 6days

while A alone finished it in 9days

take the LCM of 6&9 =18 (total work)

so here A+B's Efficiency =18/6=3

& A's Efficiency = 18/9=2

it means B's Efficiency = 3-2=1

So, B alone can finished the work in 18/1=18days (Ans)