If Ryan and Aubrey work together on a project, they will complete it in 10 days. If Aubrey were to work with Ella on the same project, they will take a day longer. If Ella and Chloe work together, they will take 70% more time than Ryan and Aubrey. If Ryan and Chloe were to work together, how many more days will they take to complete the project compared to Aubrey and Ella working together?
Time taken by Ryan and Aubrey in percent = 100%
Time taken by Ella and Chloe = 100% + 70% = 170%

Time taken by Ryan and Aubrey = 10 days ---- (1)
Time taken by Aubrey and Ella = 11 days ---- (2)
Time taken by Ella and Chloe = 170% x 10 = 17 days ---- (3)

(1) + (2) + (3)
Ryan + Aubrey + Aubrey + Ella + Ella + Chloe → 10 + 11 + 17 = 38 days
Ryan + 2 (Aubrey + Ella) + Chloe → 38 days
Ryan + Chloe + 2 x 11 → 38 days
Ryan + Chloe → 38 - 22 = 16 days

More days to complete the project for Ryan and Chloe compared to Aubrey and Ella
= 16 - 11
= 5

Answer(s): 5