A and B together can do a work In 4 days. A alone can do it in 20 days.what time B will take to do the work alone?	Options
A) 6 days
B) 8 days
C) 12 days
D) 10 days
E) 5 days
5 daysxplanation:   A and B 1day's work = 1/4   A alone can do 1day's work = 1/20   what time B will take to do the work alone?   B = (A+B) - A = (1/4) - (1/20) = 5 Days   Answer: Option 5 days
<result>E</result>
A and B together can do a work In 4 days. A alone can do it in 20 days.what time B will take to do the work alone?