A car covers a distance of 350 km in 5 hours and covers another 450 km at a speed of 90 km/h. What is the average speed (in km/h) of the car?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 80.
Time for the second part of the journey = 450/90 = 5 hours
Total distance = 350 + 450 = 800 km
Total time = 5 + 5 = 10 hours
Average speed = 800/10 = 80 km/h
Therefore, the average speed of the car is 80 km/h.