Answer:
12/15 in one hour or 80% of a mile
Explanation:
If the toddler walks 3/15 miles in 15 minutes, it walks 6/15 miles in 30 minutes, 9/15 miles in 45 minutes, 12/15 miles in 60 minutes, and 15/15 miles in 75 minutes. We just simply increase based on our ratio given to us. The original ratio simplify is 1/5 miles in 5 minutes.