Question

7
9. A and B together complete a piece of work in T
days. If A alone completes the work in T + 3 days
and B alone completes the piece of work in T + 12
days, what is T?
(S.B.I.P.O., 2008)
11​

Answer 1

Answer:

6

Step-by-step explanation:

1/a+1/b=1/t

a=t+3

b=t+12

sloving we get t=6