If Harper and Risa work together on a project, they will complete it in 5 days. If Risa were to work with Olivia on the same project, they will take a day longer. If Olivia and Wyatt work together, they will take 200% more time than Harper and Risa. If Harper and Wyatt were to work together, how many more days will they take to complete the project compared to Risa and Olivia working together?
Time taken by Harper and Risa in percent = 100%
Time taken by Olivia and Wyatt = 100% + 200% = 300%

Time taken by Harper and Risa = 5 days ---- (1)
Time taken by Risa and Olivia = 6 days ---- (2)
Time taken by Olivia and Wyatt = 300% x 5 = 15 days ---- (3)

(1) + (2) + (3)
Harper + Risa + Risa + Olivia + Olivia + Wyatt → 5 + 6 + 15 = 26 days
Harper + 2 (Risa + Olivia) + Wyatt → 26 days
Harper + Wyatt + 2 x 6 → 26 days
Harper + Wyatt → 26 - 12 = 14 days

More days to complete the project for Harper and Wyatt compared to Risa and Olivia
= 14 - 6
= 8

Answer(s): 8