A and B together can do a work In 2 days. A alone can do it in 12 days. What time B will take to do the work alone?  Select.
A) 2.4 days B) 8 days C) 1.2 days D) 1.0 days E) 5 days
Explanation:   2.4 days and B 1day's work = 1/2   2.4 days alone can do 1day's work = 1/12   what time B will take to do the work alone?   B = (2.4 days+B) - 2.4 days = (1/2) - (1/12) = 2.4 Days   2.4 daysnswer: Option 2.4 days
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A and B together can do a work In 2 days. A alone can do it in 12 days. What time B will take to do the work alone?