Answer:
First train = 365 miles per hour
Second train = 355.2 miles per hour
Step-by-step explanation:
If the speed of the second train is represented by x, then the first train's speed is (x + 9.8)
We can form the following equation:
x + (x + 9.8) = 720.2
2x = 720.2 - 9.8
x = 710.4 / 2
x = 355.2 = speed of second train
Speed of first train = 355.2 + 9.8 = 365
