Question

a car travels at a speed of 40 km per hour for 2 hours and length at 60 km per hour for 3 hours . what is the average speed of the car during the entire journey?

Answer 1

Average speed = Total distance / Time taken

Given,

Speed 1 = 40 km/h
Time 1 = 2 hrs.

Speed 2 = 60 km/h
Time 2 = 3 hrs.

Total time = 3 + 2 = 5 hrs.

Distance 1 =40×2= 80 km
Distance 2=60×3= 180 km

Therefore, total distance = 80 + 180 = 260 km.

Therefore, average speed = 260/5 = 52 km/h.