Multiple choice

A motorist travels a distance of 20 km at a speed of 55 km/h and travels at the speed of 65 km/h while returning. What is his average speed?

  1. 54.55 km/h

  2. 59.58 km/h

  3. 55.58 km/h

  4. 54.58 km/h

  5. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Average speed = (2x × y) / (x+y) = (2 × 55 × 65) / (55 + 65) = 59.58 km/hr