A car is traveling on a small highway and is either going 55 miles per hour or 35 miles per hour, depending on the speed limits, until it reaches its destination 200 miles away. Letting xx represent the amount of time in hours that the car is going 55 miles per hour, and yy being the time in hours that the car is going 35 miles per hour, an equation describing the relationship is: 55x+35y=20055x+35y=200

c. If the car spends no time going 35 miles per hour, how long would the trip take?