If Dylan and Bryan work together on a project, they will complete it in 12 days. If Bryan were to work with Chloe on the same project, they will take a day longer. If Chloe and Ellie work together, they will take 50% more time than Dylan and Bryan. If Dylan and Ellie were to work together, how many more days will they take to complete the project compared to Bryan and Chloe working together?
Time taken by Dylan and Bryan in percent = 100%
Time taken by Chloe and Ellie = 100% + 50% = 150%

Time taken by Dylan and Bryan = 12 days ---- (1)
Time taken by Bryan and Chloe = 13 days ---- (2)
Time taken by Chloe and Ellie = 150% x 12 = 18 days ---- (3)

(1) + (2) + (3)
Dylan + Bryan + Bryan + Chloe + Chloe + Ellie → 12 + 13 + 18 = 43 days
Dylan + 2 (Bryan + Chloe) + Ellie → 43 days
Dylan + Ellie + 2 x 13 → 43 days
Dylan + Ellie → 43 - 26 = 17 days

More days to complete the project for Dylan and Ellie compared to Bryan and Chloe
= 17 - 13
= 4

Answer(s): 4