If the equal is 55x + 35y = 200
- x: time driven at 55 miles/hour
- y: time driven at 35 miles/hour
If the car spends 3 hours at 55 miles per hour, then it drove:
55(3) + 35y = 200
35y =35
y = 1.
There the drive spent 1-hour driving at 35 mph.
Hope it helps!
