I remember being taught this but I can't remember how to solve it. Can you explain how to get the answer??

Answer:
342.5 miles or D
Step-by-step explanation:
55 x 3.5 = 192.5
60 x 2.5 = 150
192.5 + 150 = 342.5
This should be it! Please mark me Brainliest :)