A person covers the first 11 km in 60 minutes and the next 22 km in 30 minutes. What is his average speed for the whole journey?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 22 km/hr.
The person covers:
11 km in the first part, and
22 km in the second part.
So, the total distance = 11 km + 22 km = 33 km
The person spends:
60 minutes (1 hour) for the first 11 km, and
30 minutes (0.5 hours) for the next 22 km.
So, the total time = 1 hour + 0.5 hours = 1.5 hours
Average Speed = Total Distance/Total Time
Average Speed = 33km/1.5hours = 22km/h