Two stations are 720 km apart and a train is timed to cover the run in 12 hours. After 4 hours at its scheduled speed, track work keeps it at three-fourths of that speed for 2 hours. At what speed must it cover the rest to arrive on time?

Question

Accepted Answer

65 km/h. Scheduled speed 60 km/h. Covered: 240+2×45=330 km in 6 h. Remaining 390 km in 6 h → 65 km/h. (60 km/h would leave it 30 km short.)

Two stations are 720 km apart and a train is timed to cover the run in 12 hours. After 4 hours at its scheduled speed, track work keeps it at three-fourths of that speed for 2 hours. At what speed must it cover the rest to arrive on time?

Step-by-Step Solution

Master this topic in 30 minutes a day.

More Problems on Trains practice