If Joseph and Risa work together on a project, they will complete it in 10 days. If Risa were to work with Aria on the same project, they will take a day longer. If Aria and Rael work together, they will take 160% more time than Joseph and Risa. If Joseph and Rael were to work together, how many more days will they take to complete the project compared to Risa and Aria working together?
Time taken by Joseph and Risa in percent = 100%
Time taken by Aria and Rael = 100% + 160% = 260%

Time taken by Joseph and Risa = 10 days ---- (1)
Time taken by Risa and Aria = 11 days ---- (2)
Time taken by Aria and Rael = 260% x 10 = 26 days ---- (3)

(1) + (2) + (3)
Joseph + Risa + Risa + Aria + Aria + Rael → 10 + 11 + 26 = 47 days
Joseph + 2 (Risa + Aria) + Rael → 47 days
Joseph + Rael + 2 x 11 → 47 days
Joseph + Rael → 47 - 22 = 25 days

More days to complete the project for Joseph and Rael compared to Risa and Aria
= 25 - 11
= 14

Answer(s): 14