A can do a piece of work in 90 days & Y can do it in 80 days. They began working together but A leaves after some days and then B completed the remaining work in 46 days. The number of days after which A left the work was?
Choose the most appropriate option: A) 10 days B) 11 days C) 16 days D) 17 days E) 18 days
A and B did the work for some days.   After that , B completed the remaining work in 46 days .   In 46 days, word done by B =   1   80   x 46 =   23   45   Remaining work = 1 – 23/45   = 17/45   Remaining work is done by both A and B together =   17/45x 90 x 80/90 + 80   = 16 days   16 days
<result>C</result>
A can do a piece of work in 90 days & Y can do it in 80 days. They began working together but A leaves after some days and then B completed the remaining work in 46 days. The number of days after which A left the work was?