John covers `x` centimetres in one step. How many centimetres does he cover in 9 steps?

Rohit covers x centimetres in one step. How much distance does he cover in y steps?

Rohit covers 7x certimetres in one step. What is the distance moved by him in 5x steps?

Ravish covers 3x^2y centimetres in one step. What is the distance moved by him in 2x y^2 minutes, if he takes x y steps in one minute.

Rahul cycles at 12 km per hour .How much distance does he cover in 36 minutes?

How many times does the digit 9 occur between 1 and 100?

How many molecules of ATP does one NADH generate?

Sam covers 2 km in 28 minutes. How much distance will he cover in 84 minutes?

How many ATP molecules does one NADH produce ?

A man takes 3 h to cover a certain distance along the flow and takes 6h to cover the same distance opposite to flow. In how much time, he will cross this distance in still water.

A cylinder vessel of diameter 14cm and height 42cm is fixed symmetrically inside a similar vessel of diameter 16cm and height 42cm. The total space between the two vessels is filled with cork dust for heat insulation purposes. How many cubic centimetres of cork dust will be required?