A and B together can do a work In 3 days. A alone can do it in 12 days. What time B will take to do the work alone?  Answers
A) 4 days
B) 8 days
C) 12 days
D) 10 days
E) 5 days
Explanation:   4 days and B 1day's work = 1/3   4 days alone can do 1day's work = 1/12   what time B will take to do the work alone?   B = (4 days+B) - 4 days = (1/3 - (1/12) = 4 Days   4 daysnswer: Option 4 days
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A and B together can do a work In 3 days. A alone can do it in 12 days. What time B will take to do the work alone?