If Josiah and Julie work together on a project, they will complete it in 12 days. If Julie were to work with Ellie on the same project, they will take a day longer. If Ellie and Stella work together, they will take 200% more time than Josiah and Julie. If Josiah and Stella were to work together, how many more days will they take to complete the project compared to Julie and Ellie working together?
Time taken by Josiah and Julie in percent = 100%
Time taken by Ellie and Stella = 100% + 200% = 300%

Time taken by Josiah and Julie = 12 days ---- (1)
Time taken by Julie and Ellie = 13 days ---- (2)
Time taken by Ellie and Stella = 300% x 12 = 36 days ---- (3)

(1) + (2) + (3)
Josiah + Julie + Julie + Ellie + Ellie + Stella → 12 + 13 + 36 = 61 days
Josiah + 2 (Julie + Ellie) + Stella → 61 days
Josiah + Stella + 2 x 13 → 61 days
Josiah + Stella → 61 - 26 = 35 days

More days to complete the project for Josiah and Stella compared to Julie and Ellie
= 35 - 13
= 22

Answer(s): 22