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A and B can do a piece of work in 12 days and 15 days respectively. They began to work together but A left after 4 days. In how many more days would B alone complete the remaining work?

A20/3

B25/3

C6

D5

Answer:

C. 6

Read Explanation:

A (4 days) = 4/12-1/3, Remaining=2/3, B=2/3 x 15=10 days; B alone = 10 - 4 = 6 days


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