A can do a work in 14 days and working together A and B can do the same work in 10 days. In what time can B alone do the work?  Choose the most appropriate option
A) 35 days  B) 25 days  C) 30 days  D) 27 days  E) 23 days
Work done by B in 1 day = 1/10 - 1/14 = (7-5)/70   =2/70=1/35   So, B alone can do the work in 35 days.   35 daysNSWER:35 days
<result>A</result>
A can do a work in 14 days and working together A and B can do the same work in 10 days. In what time can B alone do the work?