Answer:
Last week Gullian walked 10 minutes more than Nancy.
Explanation:
1. Nancy walk 50 minutes each day for 4 days last week, then the total number of minutes Nancy walked is

2. Gullian walked 35 minutes each day for 6 days last week, then the total number of minutes Gullian walked is

3. Since
than last week Gullian walked 10 minutes more than Nancy.