If Audrey and Chloe work together on a project, they will complete it in 4 days. If Chloe were to work with Gavin on the same project, they will take a day longer. If Gavin and Stella work together, they will take 150% more time than Audrey and Chloe. If Audrey and Stella were to work together, how many more days will they take to complete the project compared to Chloe and Gavin working together?
Time taken by Audrey and Chloe in percent = 100%
Time taken by Gavin and Stella = 100% + 150% = 250%

Time taken by Audrey and Chloe = 4 days ---- (1)
Time taken by Chloe and Gavin = 5 days ---- (2)
Time taken by Gavin and Stella = 250% x 4 = 10 days ---- (3)

(1) + (2) + (3)
Audrey + Chloe + Chloe + Gavin + Gavin + Stella → 4 + 5 + 10 = 19 days
Audrey + 2 (Chloe + Gavin) + Stella → 19 days
Audrey + Stella + 2 x 5 → 19 days
Audrey + Stella → 19 - 10 = 9 days

More days to complete the project for Audrey and Stella compared to Chloe and Gavin
= 9 - 5
= 4

Answer(s): 4