Question

Consider three model train tracks where trains travel at the same speed. Drag the number cards to show possible times.

a. 2 hours
b. 4 hours
c. 6 hours
d. 8 hours

Answer 1

When the train travels for 2 hours, its average speed is 40 miles per hour. For 4 hours, the average speed is 20 miles per hour. If the train travels for 6 hours, the average speed is approximately 13.33 miles per hour. And for 8 hours, the average speed is 10 miles per hour.

Step-by-step explanation:

1. 2 hours: The train travels 80 miles, so the average speed is 80 miles / 2 hours = 40 miles per hour.
2. 4 hours: The train still travels 80 miles, so the average speed is 80 miles / 4 hours = 20 miles per hour.
3. 6 hours: The train again travels 80 miles, so the average speed is 80 miles / 6 hours = ~13.33 miles per hour. (rounded to two decimal places)
4. 8 hours: The train covers 80 miles in 8 hours, so the average speed is 80 miles / 8 hours = 10 miles per hour.