A man travelled from one city to another. What is the distance between the two cities?
1. He travelled the first \(1/4\) of his distance at a uniform speed of \(15\) miles per hour. Thereafter, he increased his speed to \(20\) miles per hour
2. The time for which he travelled at \(20\) miles per hour was \(5\) hours greater than the time for which he travelled at \(15\) miles per hour
The OA is C