If Ryan and Zoey work together on a project, they will complete it in 4 days. If Zoey were to work with Sofia on the same project, they will take a day longer. If Sofia and Isaiah work together, they will take 100% more time than Ryan and Zoey. If Ryan and Isaiah were to work together, how many more days will they take to complete the project compared to Zoey and Sofia working together?
Time taken by Ryan and Zoey in percent = 100%
Time taken by Sofia and Isaiah = 100% + 100% = 200%

Time taken by Ryan and Zoey = 4 days ---- (1)
Time taken by Zoey and Sofia = 5 days ---- (2)
Time taken by Sofia and Isaiah = 200% x 4 = 8 days ---- (3)

(1) + (2) + (3)
Ryan + Zoey + Zoey + Sofia + Sofia + Isaiah → 4 + 5 + 8 = 17 days
Ryan + 2 (Zoey + Sofia) + Isaiah → 17 days
Ryan + Isaiah + 2 x 5 → 17 days
Ryan + Isaiah → 17 - 10 = 7 days

More days to complete the project for Ryan and Isaiah compared to Zoey and Sofia
= 7 - 5
= 2

Answer(s): 2