List of top Arithmetic and Mental Ability Questions

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?
A hotel requires 700 kgs of rice for a week. How many tonnes of rice will it require for 100 days?
The ratio of length and breadth of a rectangular park is 3:2. 'X' is walking along the boundary of the park at the speed of 6 km/hr and completes one round in 20 minutes. find the area of the park in square meters.
At what time between 5.00 and 7.00, the hands of clock are straight and point in opposite direction?
An accurate clock indicates 9'O clock in the morning. Through how many degrees the hour hand turns when the clock indicates 4'O clock in the afternoon?
X and Y take part in 100 meter race. X runs at the speed of 6 kmph. X gives Y a start of 4 meter and still beats him by 4 seconds. The speed of Y is...........
Running at the constant rate, ten identical machines can produce 1000 plates per minute. At this rate, how many plates could 25 such machines can produce in 5 minutes?