A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?

A bicycle wheel makes 75 revolutions per minute to maintain a speed of 8.91 km per hour then diameter of the wheel is ………… m .

A loaded truck travels 14 km in 25 minutes. If the speed remains the same, how far can it travel in 5 hours?

The speed of a boat in still water is 8(km)/(hr) . It can go 20 km upstream and return downstream to the engine point in 5 hours 20 minutes. Find the speed of the stream.

Abhi's heart beat is 72 per minute. Then what is his pulse rate?

A man runs towards a mirror with a speed of 15 m-s^(-1) . What is the speed of his image?