Multiple choice general knowledge math & puzzles

40% of journey is covered in 20min. & 60% in 40 min. if total distance is 120km then find average speed

  1. 120

  2. 150

  3. 130

  4. 140

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

Total distance = 120km, total time = 20min + 40min = 60min = 1 hour. Average speed = total distance / total time = 120 km / 1 hour = 120 km/h. The speeds of individual segments (144 km/h and 108 km/h) don't affect the overall average.