Question

a car travels a distance of 20km at a speed of 80km/h and a distance of 30km with a speed of 90km/h calculate the average speed of the car

Answer 1

Distances = 20km, 30km

First, find the total time taken for the whole journey with the formula Time = Distance ÷ Speed.

20km ÷ 80km/h = 0.25 hours

30km ÷ 90km/h = 0.333 hours

0.25 hours + 0.33333 hours = 0.58333 hours

Now, we find the total distance by adding 20km and 30km.

20km + 30km = 50km

Calculate the average speed with the division of total distance by total time.

50km ÷ 0.58333 hours = 85.71km/h

Therefore, the average speed of the car is 85.71km/h.

Answer 2

good to see this answers thank u for ansswering