If Zoey and Benjamin work together on a project, they will complete it in 4 days. If Benjamin were to work with Isabella on the same project, they will take a day longer. If Isabella and Caleb work together, they will take 200% more time than Zoey and Benjamin. If Zoey and Caleb were to work together, how many more days will they take to complete the project compared to Benjamin and Isabella working together?
Time taken by Zoey and Benjamin in percent = 100%
Time taken by Isabella and Caleb = 100% + 200% = 300%

Time taken by Zoey and Benjamin = 4 days ---- (1)
Time taken by Benjamin and Isabella = 5 days ---- (2)
Time taken by Isabella and Caleb = 300% x 4 = 12 days ---- (3)

(1) + (2) + (3)
Zoey + Benjamin + Benjamin + Isabella + Isabella + Caleb → 4 + 5 + 12 = 21 days
Zoey + 2 (Benjamin + Isabella) + Caleb → 21 days
Zoey + Caleb + 2 x 5 → 21 days
Zoey + Caleb → 21 - 10 = 11 days

More days to complete the project for Zoey and Caleb compared to Benjamin and Isabella
= 11 - 5
= 6

Answer(s): 6