P, Q and R are three typists who working simultaneously can type 216 pages in 4 hours. In one hour, R can type as many p…

A and B working together completed a job in 5 days. If A works twice as efficiently as he actually did and B works $$\fr…

Madhu takes twice as much time as Uma to complete a work and Rahul does it in the same time as Madhu and Uma together. I…

A can do a piece of work in 4 hours, B and C together in 3 hours, and A and C together in 2 hours. How long will B alone…

A takes three times as long as B and C together to do a job. B takes four times as long as A and C together to do the wo…

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 assist…

A contractor undertake to do a piece of work in 40 days. He engages 100 men at the beginning and 100 more after 35 days …

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…