Question

a body covers certain distance with the speed of 54km/ h and return with the speed of 72km/h.find the average speed​

Answer 1

Answer:

63km/h

Explanation:

average speed is calculated by adding the measurements given eg 72km/h +54km/h

then dividing it by two because we are finding the average

so we get 126km/h(÷)2 = 63km/hr