"A and B together complete a piece of work in `T`days. If A alone completes the work in `T\ +\
Channel: Doubtnut
Date: 2020-04-05

"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?
`3\ d a y s`
b. `9\ d a y s`
c. `12\ d a y s`

d. cannot
 be determined e. none of these"