If Isaac and Julie work together on a project, they will complete it in 5 days. If Julie were to work with Jayden on the same project, they will take a day longer. If Jayden and Jacob work together, they will take 180% more time than Isaac and Julie. If Isaac and Jacob were to work together, how many more days will they take to complete the project compared to Julie and Jayden working together?
Time taken by Isaac and Julie in percent = 100%
Time taken by Jayden and Jacob = 100% + 180% = 280%

Time taken by Isaac and Julie = 5 days ---- (1)
Time taken by Julie and Jayden = 6 days ---- (2)
Time taken by Jayden and Jacob = 280% x 5 = 14 days ---- (3)

(1) + (2) + (3)
Isaac + Julie + Julie + Jayden + Jayden + Jacob → 5 + 6 + 14 = 25 days
Isaac + 2 (Julie + Jayden) + Jacob → 25 days
Isaac + Jacob + 2 x 6 → 25 days
Isaac + Jacob → 25 - 12 = 13 days

More days to complete the project for Isaac and Jacob compared to Julie and Jayden
= 13 - 6
= 7

Answer(s): 7