Question

A car moves with a speed of 30 km per hour - for half an hour 25 km per hour -1 for one hour and 40 km per hour - 142 hour calculate the average speed of the car

Answer 1

average speed=15+25+5680/143.5
=39.860km/h

Answer 2

the average speed = 15 + 25 = 40
5680 ÷ 143. 5 + 40
39.860
the average speed of car is 39.860 km/hr