Numeric Simplification Test 3

Solve:

(64)^3/2 ÷ (512)^1/3

A car starts running at the speed of 40 km. per hour. The speed of the Car increases by 2 km. at the end of every one hour. What will the distance covered at the end of ten hour from the start of the Journey?

What should come in place of the question mark (?) in the following question?

 What should come in place of the question mark (?) in the following question?