Hi there!
"mph" stands for "miles per hour".
This means that the car travels 55 miles in 1 hour.
To find your answer, you'll need to use the cross product method :
55 miles → 1 hour
206.35 → x
(1 × 206.35) ÷ 55 = x
206.35 ÷ 55 = x
206.35 ÷ 55 = 3.751818...
206.35 ÷ 55 ≈ 3.75
0.75 × 60 = 45 minutes
Your answer is: It takes 3 hours and 45 minutes for the car to arrive at its destination.
There you go! I really hope this helped, if there's anything just let me know! :)