Answer:
The bus route from Springfield to Burlington is 172.5 miles long.
Explanation:
Let the distance of the bus route be x.
Distance covered by bus from Springfield to Burlington = x
Distance covered by bus from Burlington to Springfield = x
Distance covered in 1 round = x + x = 2x
Total distance covered by bus in 9 round = 9 × 2x = 18x
Given that bus traveled a total distance of 3,105 miles
The bus route from Springfield to Burlington is 172.5 miles long.