If Audrey and Owen work together on a project, they will complete it in 10 days. If Owen were to work with Samantha on the same project, they will take a day longer. If Samantha and Lilian work together, they will take 200% more time than Audrey and Owen. If Audrey and Lilian were to work together, how many more days will they take to complete the project compared to Owen and Samantha working together?
Time taken by Audrey and Owen in percent = 100%
Time taken by Samantha and Lilian = 100% + 200% = 300%

Time taken by Audrey and Owen = 10 days ---- (1)
Time taken by Owen and Samantha = 11 days ---- (2)
Time taken by Samantha and Lilian = 300% x 10 = 30 days ---- (3)

(1) + (2) + (3)
Audrey + Owen + Owen + Samantha + Samantha + Lilian → 10 + 11 + 30 = 51 days
Audrey + 2 (Owen + Samantha) + Lilian → 51 days
Audrey + Lilian + 2 x 11 → 51 days
Audrey + Lilian → 51 - 22 = 29 days

More days to complete the project for Audrey and Lilian compared to Owen and Samantha
= 29 - 11
= 18

Answer(s): 18