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1. |
A can do a piece of work in 40 days; B can do the same in 30 days. A started alone but left the work after 10 days, then B worked at it for 10 days. C finished the remaining work in 10 days. C alone c |
A. | 24 days |
B. | 30 days |
C. | 44 days |
D. | 17 1/2 days |
Answer» B. 30 days | |