1.

A can do a piece of work in 6 days working 8 hours a day while B can do the same work in 4 days working 10 hours a day. If the work has to be completed in 5 days, so how many hours do they need to work together in a day?

A. 59/11
B. 48/11
C. 70/11
D. 65/11
Answer» C. 70/11


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