The average of the three numbers x, y, and z is 45. x greater than the average of y and z by 9. The average of y and z is grater than y by 2. Then the difference of x and z is:

The ratio of two numbers is 7:4, if 8 is added to both the number ration becomes 13:8 what is the smaller numb...

A boat traved with a speed of 10 km/hr in still water. If the speed of the stream is 3 km/hr then find time ta...

A ans B can do a work in 12 days. B can do the same work in 18 days. In how many days A can complete the 2/3 o...

A is twise as good as B and together they finish a piece of work in 16 days. The number of days taken by A alo...

A box contains 5 pink , 3 green and 2 yellow balls, Three balls are picked up randomly. What is the probabilit...

A motor cycle covers 40 km with a speed of 20 km/hr. Find the speed of the motor cycle for the next 40 km jour...