A works twice as that as B. If B can complete a work in 12 days independently, then the number of days in which A and B can together finish the work is
A
4 days
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B
6 days
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C
8 days
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D
18 days
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Solution
The correct option is A 4 days A is twice as fast of B, A will take just 6 days to the same work alone since B takes 12 days. So, Amount of work done by A in one day =16 Amount of work done by B alone =112 Amount of work done by both of them in one day =16+112=14 Thus, number of days taken by both of them to do the work together =114=4