Answer:
The total distance he walked was 17/10 miles or 1.7 miles.
Explanation:
Ron's walk was divided into two parts, one that goes from his grandmother's house to the store and then from the store to his house. The total distance that he walked is given by the sum of the two separate parts, so in order to calculate how far he walked we will do as follows:
Total distance = 8/10 + 9/10
Total distance = 17/10 mile = 1.7 miles
The total distance he walked was 17/10 miles or 1.7 miles.