"A takes twice as much time as B or thrice as much time as C to finish a piece of work.
Channel: Doubtnut
Date: 2020-04-05

"A takes twice as much time as B or thrice as much
 time as C to finish a piece of work. Working together, they can finish the
 work in 2 days. B can do the work alone in :
a. 4 days b. `6\ d a y s`
c. `8\ d a y s`
d. `12\ d a y s`"