If a train runs at 5/6 of its original speed, then it reaches the station 10 min late. Then find out the usual time taken by train to cover the distance.
Correct Answer: 50 min
Explanation:
Let the actual speed of train be x and actual time taken be y Then new speed of train = 5x/6 Therefore, new time taken = 6y/5 (as distance is same in both case) Given, 6y/5 - y = 1/6 hr , therefore actual time = 50 min