18. Four mark example problems V

From home, Rajan rides on his motorbike at \(35 \ km/hr\) and reaches his office \(5\) minutes late. If he had ridden at \(50 \ km/hr\), he would have reached his office \(4\) minutes earlier. How far is his office from his home?

 

Answer:

 

The distance to Rajan's office \(=\)