A car covers a distance of 715 km at a constant speed. If the speed of the car would have been 10 km/hr more, then it would have taken 2 hrs less to cover the same distance. What is the original speed of the car?
60 km/hr
50 km/hr
55 km/hr
65 km/hr
45 km/hr
Total Distance = 715
Suppose the Original Speed of Car = x
Then, new speed of car = x + 10
As per the given data,
2x2 + 20x - 7150 = 0
x = 55 Km/hr