Question

A train travels from Boston to New York. It travels a distance of 180 km in two hours, stops for fuel for half an hour, then travels 640 km in the next four hours. What is the average speed of the train for this trip?

A) 80 km/h
B) 100 km/h
C) 120 km/h
D) 140 km/h

Answer 1

The average speed of the train for this trip is approximately 126.15 km/h.

Step-by-step explanation:

To calculate the average speed of the train, we need to find the total distance traveled and the total time taken. The train traveled 180 km in 2 hours and then 640 km in 4 hours, for a total distance of 820 km. Including the half-hour stop for fuel, the total time taken is 6.5 hours.

To find the average speed, we divide the distance by the time: Average speed = Total distance ÷ Total time = 820 km ÷ 6.5 h = 126.15 km/h.

Therefore, the average speed of the train for this trip is approximately 126.15 km/h.