If Violet and Christian work together on a project, they will complete it in 5 days. If Christian were to work with Amelia on the same project, they will take a day longer. If Amelia and Elizabeth work together, they will take 80% more time than Violet and Christian. If Violet and Elizabeth were to work together, how many more days will they take to complete the project compared to Christian and Amelia working together?
Time taken by Violet and Christian in percent = 100%
Time taken by Amelia and Elizabeth = 100% + 80% = 180%

Time taken by Violet and Christian = 5 days ---- (1)
Time taken by Christian and Amelia = 6 days ---- (2)
Time taken by Amelia and Elizabeth = 180% x 5 = 9 days ---- (3)

(1) + (2) + (3)
Violet + Christian + Christian + Amelia + Amelia + Elizabeth → 5 + 6 + 9 = 20 days
Violet + 2 (Christian + Amelia) + Elizabeth → 20 days
Violet + Elizabeth + 2 x 6 → 20 days
Violet + Elizabeth → 20 - 12 = 8 days

More days to complete the project for Violet and Elizabeth compared to Christian and Amelia
= 8 - 6
= 2

Answer(s): 2