John jogs at a speed of 4 miles per hour when he runs alone, but runs at 6 miles per hour when he is being dragged by his 100-pound German Shepherd dog. If John and his dog go on a run together for 30 minutes, and then John runs for an additional 30 minutes by himself, how far will John have traveled?
Step-by-step reasoning process below:
5
John runs at 6 miles per hour for 0.

5 hours, for a distance of 6 * 0.

5 = 3 miles.

Then John runs at 4 miles per hour for 0.

5 hours, for a distance of 4 * 0.

5 = 2 miles.

In total, John runs 3 + 2 = 5 miles.

.

Final answer: 5