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A and B together can do a job in 2 days; B and C can do it in four days; and A and C in $2 \frac{2}{5}$ days. The number of days required for A to do the job alone is:

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answer is B.

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Detailed Solution

Concept: To solve these types of questions it is important to note that if a man can complete a work in x days then the work he will do in 1 day is

Now, A can do

of the work in 1 day. So, he can do the complete work in Question Image

Hence, the correct answer is option (2).

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