Question

A car travels at a speed of 40km/hour for 0.5 hour and 20km/hour for next 0.3 hours and then 70km/hour for next 0.67 hours. What is the average speed of the car?

Answer 1

Answer:

49.59 kph

Explanation:

Total distance = V(T) = 40(0.5) + 20(0.3) + 70(0.67) = 72.9 km

Average speed = D/T = 72.9 / (0.5 + 0.3 + 0.67) = 49.59 kph

Answer 2

Explanation:

40+0.5+20+0.3+70+0.67