If Elizabeth and Luke work together on a project, they will complete it in 10 days. If Luke were to work with Rebecca on the same project, they will take a day longer. If Rebecca and Wyatt work together, they will take 50% more time than Elizabeth and Luke. If Elizabeth and Wyatt were to work together, how many more days will they take to complete the project compared to Luke and Rebecca working together?
Time taken by Elizabeth and Luke in percent = 100%
Time taken by Rebecca and Wyatt = 100% + 50% = 150%

Time taken by Elizabeth and Luke = 10 days ---- (1)
Time taken by Luke and Rebecca = 11 days ---- (2)
Time taken by Rebecca and Wyatt = 150% x 10 = 15 days ---- (3)

(1) + (2) + (3)
Elizabeth + Luke + Luke + Rebecca + Rebecca + Wyatt → 10 + 11 + 15 = 36 days
Elizabeth + 2 (Luke + Rebecca) + Wyatt → 36 days
Elizabeth + Wyatt + 2 x 11 → 36 days
Elizabeth + Wyatt → 36 - 22 = 14 days

More days to complete the project for Elizabeth and Wyatt compared to Luke and Rebecca
= 14 - 11
= 3

Answer(s): 3