If Julie and Salik work together on a project, they will complete it in 10 days. If Salik were to work with Roshel on the same project, they will take a day longer. If Roshel and Rael work together, they will take 190% more time than Julie and Salik. If Julie and Rael were to work together, how many more days will they take to complete the project compared to Salik and Roshel working together?
Time taken by Julie and Salik in percent = 100%
Time taken by Roshel and Rael = 100% + 190% = 290%

Time taken by Julie and Salik = 10 days ---- (1)
Time taken by Salik and Roshel = 11 days ---- (2)
Time taken by Roshel and Rael = 290% x 10 = 29 days ---- (3)

(1) + (2) + (3)
Julie + Salik + Salik + Roshel + Roshel + Rael → 10 + 11 + 29 = 50 days
Julie + 2 (Salik + Roshel) + Rael → 50 days
Julie + Rael + 2 x 11 → 50 days
Julie + Rael → 50 - 22 = 28 days

More days to complete the project for Julie and Rael compared to Salik and Roshel
= 28 - 11
= 17

Answer(s): 17