Parihar starts from home for his office. He travels downhill, then on flat ground and then uphill to reach his office. During this, the time taken to travel uphill and on flat ground is the same. It takes him 3 hrs. to reach the office. On the way back to home Mr. Parihar takes 3 hrs 10 min to reach home along the same route. The speed on downhill is 60 km/hr, on flat ground is 48 km/hr and uphill is 40 km/hr.

Q1: What is the distance between his home and his office?
Q2: By what distance should his office be shifted so that the time taken to go to the office is same as time taken to reach home from the office?