Sandra Walks 1/4 hour per day 7 times per week Michelle walks 2/4 hour per day 5 times a week.
After 1 week who walked the most Sandra or Michelle
Michelle walked for a total of 2/4 hour per day for 5 days, so she walked for a total of 2/4 * 5 = 10/4 = 2.5 hours in one week.
Sandra walked for a total of 1/4 hour per day for 7 days, so she walked for a total of 1/4 * 7 = 7/4 = 1.75 hours in one week.
Therefore, Michelle walked more than Sandra in one week.