List of top Arithmetic and Mental Ability Questions on Time and Work asked in KLEE

A can do a work in 8 days and B can do the same work in 16 days. If A, B and C can together do the same work in 4 days, then C can do the work in
X can do a work in 10 days. X and Y both together can do the same work in 6 days. Then Y alone can do the work in
A can do a work in 10 days and B can do the same work in 15 days. Both together can do the same work in
A can do a work in 20 days and B can do it in 10 days. A starts the work and works alone for 5 days. Then B joins A and they finish the work. In how many days total does the work get finished?
A can do a piece of work in x days and B can do the work in 3x days. To finish the work together, they take 12 days. What is the value of x?
There are two tanks A and B to fill up a water tank. The tank can be filled in 40 min together by A and B, if the tank can be filled in 60 min when tap A alone is on. How much time will tap B alone take to fill up the tank?
In a ship there was stock of food for 200 days for 2000 persons. After 30 days, 1000 persons left the ship. For how may days shall the left-over food last for the remaining persons?
X can complete a piece of work in 4 days. Y can complete the same work in 5 days. How many days will it take to complete the same work if X and Y work together?
X and Y can complete a piece of work in 20 days and X alone in 40 days. In how many days Y alone can complete the work?