search
Q: If a boat goes upstream at a speed of 21 km/h and comes back the same distance at 28 km/h. What is the average speed (in km/hr) for the total journey?
  • A. 24.5
  • B. 24
  • C. 25
  • D. 25.4
Correct Answer: Option B -
answer image

Explanations:

explanation image