GMAT Quant Questions - Work-Time, Pipes-Cisterns

June 15, 2004: Ram, who is half as efficient as Krish, will take 24 days to complete a work if he worked alone. If Ram and Krish worked together, how long will they take to complete the work? Answer »

July 5, 2004 : A can complete a project in 20 days and B can complete the same project in 30 days. If A and B start working on the project together and A quits 10 days before the project is completed, in how many days will the project be completed? Answer »