The hidden questions in this question is basically what Suzy and Gretchen run or walk in a week. You're trying to find the difference, and to be able to do so, you need calculations. You need to multiply each person's rate per day by 7 to find their week rate. Let's solve. 1.25×7 8.75 This is the distance Suzy runs in a week.. 3×7 21 This is the distance Gretchen walks in a week. Let's subtract. 21-8.75 12.25 So Gretchen covers 12.25 miles more than Suzy.
