A can do a piece of work in 10 days, B in 15 days. They work for 5 days. The rest of the work was finished by C in 2 day…

A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B…

Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr. If all pipes are opened…

X, Y and Z complete a work in 6 days. X or Y alone can do the same work in 16 days. In how many days Z alone can finish …

A single reservoir supplies the petrol to the whole city, while the reservoir is fed by a single pipeline filling the re…

A and B can do a job in 7 days. A is $${\text{1}}\frac{3}{4}$$ times as efficient as B. The same job can be done by A a…

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…

X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they tog…