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Q: A can finish a piece work in 18 days and B can do the same work in half of the time taken by A. Then working together what part of the same work they can finish a day?

A. $$ {1\over6}$$
B. $$ {2\over5}$$
C. $$ {1\over9}$$
D. $$ {2\over7}$$
Answer» B. $$ {2\over5}$$


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