A person covers 20 km at a speed of 12 km/h and the next 35 km at a speed of…
2019
A person covers 20 km at a speed of 12 km/h and the next 35 km at a speed of 20 km/h. What was his average speed in km/h for the whole journey ?
- A.
17.6
- B.
17.2
- C.
16.1
- D.
16.4
Attempted by 62 students.
Show answer & explanation
Correct answer: C
Average speed = Total distance ÷ Total time Total distance = 20 + 35 = 55 km.