A man moevs with p km/h speed for 20 minutes and q km/h for next 30 minutes. Find the expression for this average speed in km/h.

A train travels with speed 40 km h^(-1) for first 15 minutes and then 60 km h for next 15 minutes, hence its average speed during this time interval is 50 km h ^(-1).

A car travels at a speed of 50 km/hr for 30 minutes, at 30 km/hr for next 15 minutes and then 70 km/hr for next 45 minutes. What is the average speed of the car?

A car travels at a speed of 50 km//hr for 15 minute and then 70 km//hr for next 45 minutes. What is the average speed of the car?

The speed of a motorcycle is 40 km h^(-1) for first 10 minute and 50 km h^(-1) for the next 10 minute, then the average speed of this motorcycle during the 20 minute would be ......... km h^(-1).

A boy walks first a distance of 0.5 km in 10 minutes, next 10 km in 20 minutes and last 1.5 km in 30 minutes. Is the motion uniform ? Find the average speed of the boy in ms^(-1) .

A car travels with speed 30 km h^(-1) for 30 minutes and then with speed 40 km h^(-1) for one hour. Find the average speed of car

A cyclist moves with a speed of 30km/hr in the first 10 minutes, with speed of 15km/hr in the next 20 minute and with a speed of 40km/hr in the last 15 minutes Calculate the average speed of the cyclist.

A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is: