0
A and B can do a piece of work in 7 days. With the help of C they finish the work in 5 days. C alone can do that piece of work in?
- A1 day
- B10 days
- C30 days
- D32 days
Correct answer: C
Discussion 1
Log in or create a free account to reply and vote.
0
CCommunity
30 days
C = 1/5 – 1/6 = 1/30 => 30 days
C = 1/5 – 1/6 = 1/30 => 30 days