Level-1 Examples

A alone can complete a work in 30 days while B alone can complete the same work in 20 days. In how many days both working together can complete the same work?

A can do a work in 5 days while B can do the same work in 8 days. They worked together to complete the work and earned Rs. 6760. Find A’s share?

Two pipes A and B can fill a tank in 60 minutes and 75 minutes respectively. There is also an outlet C. If A, B and C are opened together, the tank is full in 50 minutes. How much time will be taken by C to empty the full tank?

Varun and Syan can do a work in 3 days. Syan and Anil can do it in 4 days, and Anil and Varun can do it in 6 days. How many days will Anil alone take to do the work?