As part of his journey, a person travels 120 km at 80 km/h, the next 100 km at 40 km/h, and comes back to the starting point at 75 km/h. The average speed of the person throughout the journey (approximately) is:

Correct option is A

Given:
The person travels 120 km at 80 km/h, 100 km at 40 km/h, and returns 220 km at 75 km/h.
Formula Used:
Average Speed = $$\frac{\text{Total Distance}}{\text{Total Time}}$$​​
Solution:
Total Distance = 120 + 100 + 220 = 440 km
Time for first part = $$\frac{120}{ 80}$$​ = 1.5 hours
Time for second part = $$\frac{100}{ 40}$$​ = 2.5 hours
Time for return =$$\frac{220}{ 75}$$​ ≈ 2.93 hours
Total Time ≈ 1.5 + 2.5 + 2.93 ≈ 6.93 hours
Average Speed ≈$$\frac{440}{ 6.93}$$​ ≈ 63.5 km/h