If John and Alexander work together on a project, they will complete it in 5 days. If Alexander were to work with Aria on the same project, they will take a day longer. If Aria and Christopher work together, they will take 200% more time than John and Alexander. If John and Christopher were to work together, how many more days will they take to complete the project compared to Alexander and Aria working together?
Time taken by John and Alexander in percent = 100%
Time taken by Aria and Christopher = 100% + 200% = 300%

Time taken by John and Alexander = 5 days ---- (1)
Time taken by Alexander and Aria = 6 days ---- (2)
Time taken by Aria and Christopher = 300% x 5 = 15 days ---- (3)

(1) + (2) + (3)
John + Alexander + Alexander + Aria + Aria + Christopher → 5 + 6 + 15 = 26 days
John + 2 (Alexander + Aria) + Christopher → 26 days
John + Christopher + 2 x 6 → 26 days
John + Christopher → 26 - 12 = 14 days

More days to complete the project for John and Christopher compared to Alexander and Aria
= 14 - 6
= 8

Answer(s): 8