If Sebastian and Jayden work together on a project, they will complete it in 5 days. If Jayden were to work with Christopher on the same project, they will take a day longer. If Christopher and Julian work together, they will take 80% more time than Sebastian and Jayden. If Sebastian and Julian were to work together, how many more days will they take to complete the project compared to Jayden and Christopher working together?
Time taken by Sebastian and Jayden in percent = 100%
Time taken by Christopher and Julian = 100% + 80% = 180%

Time taken by Sebastian and Jayden = 5 days ---- (1)
Time taken by Jayden and Christopher = 6 days ---- (2)
Time taken by Christopher and Julian = 180% x 5 = 9 days ---- (3)

(1) + (2) + (3)
Sebastian + Jayden + Jayden + Christopher + Christopher + Julian → 5 + 6 + 9 = 20 days
Sebastian + 2 (Jayden + Christopher) + Julian → 20 days
Sebastian + Julian + 2 x 6 → 20 days
Sebastian + Julian → 20 - 12 = 8 days

More days to complete the project for Sebastian and Julian compared to Jayden and Christopher
= 8 - 6
= 2

Answer(s): 2