Multiple choice

Sabu has a motorcycle. He starts traveling at a speed of 48 km/hr and covers 40 km. Again, he travels at an average speed of 40 km/hr to cover a distance of 48 km. Find the average speed of Sabu for the entire trip.

  1. 43.28 km/hr

  2. 44 km/hr

  3. 45.53 km/hr

  4. 42.38 km/hr

  5. 48.32 km/hr
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Average speed = Total Distance / Total Time. Total Distance = 40 + 48 = 88 km. Time 1 = 40/48 = 5/6 hours. Time 2 = 48/40 = 6/5 hours. Total Time = 5/6 + 6/5 = (25 + 36) / 30 = 61/30 hours. Average Speed = 88 / (61/30) = 2640 / 61 approx 43.278 km/hr.

AI explanation

The total distance traveled is 40 km plus 48 km, resulting in 88 km. The time taken for the first part of the trip is 40 divided by 48, which equals 5/6 hours, and the time for the second part is 48 divided by 40, which equals 6/5 hours. The total time for the entire trip is (5/6 + 6/5) = 61/30 hours. The average speed is the total distance divided by the total time, calculated as 88 divided by (61/30), resulting in 43.28 km/hr.

Keep practicing — related questions