Question

a car travels 40km in 30 minutes and the next 40km in 40minutes.calculate thr average speed for the entire journey

Answer 1

The Average speed will be the sum of both the speed divided by 2
Speed=Distance/Time so
1st condition Speed = 40km/30min = 1.333
2nd condition Speed = 40/40= 1
Therefore average speed = 1.333+1 /2 = 1.6665 Units