A take twice as much time as B or thrice as much time to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in?
A. 2 hours
B. 6 hours
C. 9 hours
D. 11 hours
Answer:B
A take twice as much time as B or thrice as much time to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in?
A. 2 hours B. 6 hours C. 9 hours D. 11 hours