9/30 0r 3/10 of the work will be left undone
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?
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?
A forms a wall in 10 days and B forms it in 15 days. A and B start the work of forming wall together but after 2 days A leaves the work. How many days are required for making the remaining wall by B?
B is more efficient than A and they together can complete a work in 18 days. Had A done 60% of the work and then B, the remaining work, then the work would have been completed in 39 days. B alone will complete 60% of the same work in how many days?
