If Anna and Abigail work together on a project, they will complete it in 11 days. If Abigail were to work with Oliver on the same project, they will take a day longer. If Oliver and Gabriel work together, they will take 200% more time than Anna and Abigail. If Anna and Gabriel were to work together, how many more days will they take to complete the project compared to Abigail and Oliver working together?
Time taken by Anna and Abigail in percent = 100%
Time taken by Oliver and Gabriel = 100% + 200% = 300%

Time taken by Anna and Abigail = 11 days ---- (1)
Time taken by Abigail and Oliver = 12 days ---- (2)
Time taken by Oliver and Gabriel = 300% x 11 = 33 days ---- (3)

(1) + (2) + (3)
Anna + Abigail + Abigail + Oliver + Oliver + Gabriel → 11 + 12 + 33 = 56 days
Anna + 2 (Abigail + Oliver) + Gabriel → 56 days
Anna + Gabriel + 2 x 12 → 56 days
Anna + Gabriel → 56 - 24 = 32 days

More days to complete the project for Anna and Gabriel compared to Abigail and Oliver
= 32 - 12
= 20

Answer(s): 20