Answer: 1.792 hours
Step-by-step explanation: miles per hour (miles/hour) will be abbreviated as "mph."
1. Run: (2.5 miles)/(6mph) = 0.4166 hours
2. Hang Out: 0.75 hour
3. Walk: (2.5 miles/4mph) = 0.625 hours
Total = 0.4166 hour + 0.75 hour + 0.625 hour
Total = 1.792 hours