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

Time taken by Mason and Isaac = 4 days ---- (1)
Time taken by Isaac and Jonathan = 5 days ---- (2)
Time taken by Jonathan and Christian = 300% x 4 = 12 days ---- (3)

(1) + (2) + (3)
Mason + Isaac + Isaac + Jonathan + Jonathan + Christian → 4 + 5 + 12 = 21 days
Mason + 2 (Isaac + Jonathan) + Christian → 21 days
Mason + Christian + 2 x 5 → 21 days
Mason + Christian → 21 - 10 = 11 days

More days to complete the project for Mason and Christian compared to Isaac and Jonathan
= 11 - 5
= 6

Answer(s): 6