A car travels 101 km in the first hour and 55 km in the second hour. What is the average speed (in km/h) of the car for the whole journey?

Correct option is A

Given:

Distance in first hour = 101 km

Distance in second hour = 55 km

Total time = 2 hours

Formula Used:

Average Speed = $$\frac{\text{Total Distance}}{\text{ Total Time}}$$​​

Solution:

Total Distance = 101 + 55 = 156 km

Total Time = 2 hours

Average Speed = $$\frac{156} 2$$ = 78 km/h

Thus, The average speed of the car is 78 km/h.