Pooja takes 3 times as much as time than Charu and twice as much time as Bano to do a work. If all three work together, she can finish the work in 2 hours. How long will it take Bano to do the whole work alone?

Pipes A and B are filling pipes while pipe C is an emptying pipe. A and B can fill a tank in 72 and 90 minutes respectively. When all the three pipes are opened together, the tank gets filled in 2 hours. A and B are opened together for 12 minutes, then closed and C is opened, The tank will be empty after:

24 men can do work in 16 days, while 32 women do the same work in 24 days. If 16 men and 16 women started the work, then after 12 days how many more men needed to finish the remaining work in 2 days?

Pipes A and B together can fill an empty tank in 30 hours, whereas pipes B and C together can fill it in 24 hours. A, B and C together can fill the tank in 20 hours. In how many hours can pipe B alone fill 35% of the tank?

X can complete half of the work in 20 days and Y can do one-fifth of the same work in 10 days. X started the work and left after 8 days. Then Y took over to complete the remaining work. The total number of days taken by them to complete the work is: