A can do a piece of work in 10 days and B in 20 days. They begin together but A leaves 2 days before the completion of the work. The whole work will be done in.
A8 days
B7 2/3 days
C7 days
D6 days
A8 days
B7 2/3 days
C7 days
D6 days
Related Questions:
Pipes A and B can fill a tank in 12 h and 18 h, respectively, whereas pipe C can empty the full tank in 8 h. A and B opened for h and then closed. C alone will empty the tank in (in h):