A car travels up a hill at a constant speed of 36 kmh and re

A car travels up a hill at a constant speed of 36 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed (in km/h) for the round trip.

To find the average of anything, we first add everything up and divide it by the number of items. For example:
36+70=106 Then we divide the total by 2 to give us:
53km/h