If Matthew and Jonathan work together on a project, they will complete it in 5 days. If Jonathan were to work with Dylan on the same project, they will take a day longer. If Dylan and Christopher work together, they will take 140% more time than Matthew and Jonathan. If Matthew and Christopher were to work together, how many more days will they take to complete the project compared to Jonathan and Dylan working together?
Time taken by Matthew and Jonathan in percent = 100%
Time taken by Dylan and Christopher = 100% + 140% = 240%

Time taken by Matthew and Jonathan = 5 days ---- (1)
Time taken by Jonathan and Dylan = 6 days ---- (2)
Time taken by Dylan and Christopher = 240% x 5 = 12 days ---- (3)

(1) + (2) + (3)
Matthew + Jonathan + Jonathan + Dylan + Dylan + Christopher → 5 + 6 + 12 = 23 days
Matthew + 2 (Jonathan + Dylan) + Christopher → 23 days
Matthew + Christopher + 2 x 6 → 23 days
Matthew + Christopher → 23 - 12 = 11 days

More days to complete the project for Matthew and Christopher compared to Jonathan and Dylan
= 11 - 6
= 5

Answer(s): 5