Kiran rides her scooter 14 km at an average speed of 16 km per hour and again travels 16 km at an average speed of 14 km per hour. What is her average speed for the entire trip approximately?
14.87 km/hr . 14 km @ 16 km/hr = 0.875 hr 16 km @ 14 km/hr = 1.143 hr 30 km in 2.012 hr = 14.87 km/hr
A racing driver drove around a 6 km track at 140 km/hr for 3 km, 168 km/hr for 1.5 km and 210 km/hr for 1.5 km. What was his average speed for the entire 6 km?
A cyclist covers his outward journey at 15 mph.
The return, over exactly the same distance, is uphill. He completes it at 5 mph.
What is the cyclist's average speed over the entire journey?
A snail travels to his favourite vegetable patch at 110cm per hour.
After munching through the veg, it returns, over exactly the same distance at 73.3333cm per hour.
What is the snail's average speed over the return trip?
An aeroplane covers its outward journey at 600 kmph.
It returns, over exactly the same distance, at 400 kmph.
What is the average speed of the aeroplane over the entire journey?
A car covers its outward journey at 66 mph.
It returns, over exactly the same distance, at 33 mph.
What is the car's average speed over the entire journey?
