Three men can complete construction of building in 6 months. Two months after the start of work, three more men joined them. How many more months will they take to complete the construction of work?
A pipe ‘P1’ can fill a tank in 12 hours. Due to the development of a whole in the bottom of the tank 1/3rd of the water filled by the pipe ‘P1’ leaks out. Find the time when the tank will be full
3 pumps working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in one day?
P can complete a piece of work in 8 days, Q in 10 days and R in 12 days. Q and R together worked for 3 days then R was replaced by P. In how many days will the remaining work be completed?
If the bus increases his speed by 3km/hr he will reach his destination 2 hours early. If he decreases his speed by 4km/hr he will take 5 hours extra to reach same destination.Find the distance covered by him to reach his destination.
A can do a piece of work in 7 days working 9 hours each day and B does the same work in 6 days working 7 hours each day. How long it will take them to complete it, working hours a day.
If a certain number of road rollers can build a road in 50 days. If there will be 8 less road rollers, it will take 10 more days. How many road rollers were there initially?
Rashmi and Pallavi can make a carpet in 3 days and 12 days more than the time it will take if both of them worked together. Find the time in which Rashmi can make the carpet?
Two pipes P and Q would fill a cistern in 12 and 16 minutes respectively. Both pipes being opened, find when the first pipe must be turned off so that the cistern may be just filled in 8 minutes?
A cistern that could be filled in 9 hours takes one hour more to be filled owing to a leak in its bottom. If the cistern is full. In how much time will the leak empty it?
