Passage

Directions for questions 61 to 64: Read the information provided and answer the questions that follow. Praveen, who is interested in numismatics, came across some old coins 200 km away from his home, in an old town and drove at a speed double that of his regular speed with which he drove backwards to his home after collecting them. He then travelled to the archaeological department office, 15 km from his home, and reached in 20 min. After 45 min, he travelled to Govt. Information office located at 30 km away from the archaeological office, with his regular speed and had a meeting there for 30 min. He drove back to his home after meeting on the same route.

1. What is the average speed of his entire journey from home to Government information office & return including the time he spent in between?