Sachin can do a work in 15 days and Virat in 20 days. If they work on it together for 4 days, then what is the fraction of the work that is left?
8/15
Together in 4 days the complete: 4*(1/15 + 1/20) = 7/15 part of work Remaining work = 1-7/15=8/15
Dhoni can do a piece of work in 80 days. He works at it for 10 days and then Virat alone finishes the work in 42 days. How many number of days would be taken by the two together to finish the work.
P is able to do a piece of work in 15 days and Q can do the same work in 10 days. If they can work together for 2 days, what is the fraction of work left?
A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?
X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last?
