Multiple choice

Rakesh travels a distance of 80 km at an average speed of 40 km/h. He again travels 120 km at an average speed of 60 km/h. He still needs to travel further to a point 240 km away. What should his average speed be if the entire journey is to be completed in 7 hours?

  1. 24 km/h

  2. 65 km/h

  3. 64 km/h

  4. 80 km/h

  5. 100 km/h
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Time 1 = 80/40 = 2 hours. Time 2 = 120/60 = 2 hours. Total distance = 80 + 120 + 240 = 440 km. Total time allowed = 7 hours. Remaining time = 7 - 2 - 2 = 3 hours. Remaining distance = 240 km. Required speed = 240 / 3 = 80 km/h.

Keep practicing — related questions