Answer:
Roger Benefits
Step-by-step explanation:
Okay so lets think about it like this:
Total Cost/Revenue for Roger:
Without Membership: 38*6 = 228
With Membership: 80 + 20*6 = 200
Difference: +28
Total Cost/Revenue for Grace:
Without Membership: 38*4 = 152
With Membership: 80 + 20*4 = 160
Difference: -8
Answer: Roger Benefits