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
Answer:
A8 days
B7 2/3 days
C7 days
D6 days
Answer:
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