A can do a half of certain work in 70 days and B one third of the same in 35 days. They together will do the whole work in.

One Answer on this Question

1. Days taken by A to complete whole work= 140 days
   Days taken by B to complete whole work= 105 days

   A’s 1 day work= 1/140
   B’s 1 day work= 1/105
   On adding these together we get: 1/60 (1 day work by working together)

   So, together they will be able to complete it in 60 days

   Reply