A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was stopped after 30 minutes,…

A labourer was appointed by a contractor on the condition he would be paid Rs. 75 for each day of his work but would be,…

Two pipes A and B can fill a cistern in 12 min and 16 min respectively. Both the pipes are opened together for a certai…

A, B and C can complete a piece of work in 10, 12 and 15 days respectively. A left the work 5 days before the work was c…

A can build up a wall in 8 days while B can break it in 3 days. A has worked for 4 days and then B joined to work with A…

If 10 persons can do a job in 20 days, then 20 person with twice the efficiency can do the same job in:

A man and a boy can do a piece of work in 24 days. If the man works alone for the last 6 days, it is completed in 26 day…

Three men A, B, C working together can do a job in 6 hours less time than A alone, in one hour less time than B alone an…