The ratio of the capacity to do work of A and B is 3 : 2. If they together can complete a work in 18 days, then how long does A take to complete the work alone? Choose the correct choice from the following choices:  A) 45  B) 30  C) 24  D) 40  E) None of these
LLet A and B take 3x and 2x days to complete the work   1/3x+1/2x=1/18 ⇒x=15   So A will take 45 days.   45nswer: 45
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The ratio of the capacity to do work of A and B is 3 : 2. If they together can complete a work in 18 days, then how long does A take to complete the work alone?