A bus runs at 40 km/h for 2 hours and 50 km/h for the next 3 hours. Find the average speed of the bus for the total journey. MCQ with Answer and Explanation

Explanation:
Total distance = 200 + 350 = 550 meters. Speed = 90 * (5/18) = 25 m/s. Time required = 550 / 25 = 22 seconds.

Explanation:
Speed of train = 140 / 7 = 20 m/s. Total distance to pass platform = 140 + 260 = 400 meters. Time required = 400 / 20 = 20 seconds.

Explanation:
Let each third of the distance be 60 km. Total distance = 180 km. Total time taken = 60/15 + 60/30 + 60/60 = 4 + 2 + 1 = 7 hours. Average speed = 180 / 7 = 25.71 km/h.