A car covers a distance of 720 km at a constant speed. If the speed of the car would have been 10 km/hr more, then it would have taken 1 hrs less to cover the same distance. What is the original speed of the car?
90 km/hr
80 km/hr
85 km/hr
73 km/hr
75 km/hr
Hit & trial is the best way to solve this,
As per that, 80 km speed is satisfying the condition.
Thus, 80 Km/hr is the correct answer.