Bingo has two dogs. On average, they walk a total of 70 miles a week. The first dog walks an average of 2 miles a day. How many miles a day does the other dog average?
Thoughts? Step-by-step reasoning:
The first dog walks 14 miles in a week because 7 x 2 = 14. The second dog walks 56 miles in a week because 70 - 14 = 56. The second dog walks an average of 8 miles a day because 56 / 7 = 8.
Thus, the answer is 8.