If Natalie and Sophia work together on a project, they will complete it in 10 days. If Sophia were to work with Elijah on the same project, they will take a day longer. If Elijah and Aubrey work together, they will take 170% more time than Natalie and Sophia. If Natalie and Aubrey were to work together, how many more days will they take to complete the project compared to Sophia and Elijah working together?
Time taken by Natalie and Sophia in percent = 100%
Time taken by Elijah and Aubrey = 100% + 170% = 270%

Time taken by Natalie and Sophia = 10 days ---- (1)
Time taken by Sophia and Elijah = 11 days ---- (2)
Time taken by Elijah and Aubrey = 270% x 10 = 27 days ---- (3)

(1) + (2) + (3)
Natalie + Sophia + Sophia + Elijah + Elijah + Aubrey → 10 + 11 + 27 = 48 days
Natalie + 2 (Sophia + Elijah) + Aubrey → 48 days
Natalie + Aubrey + 2 x 11 → 48 days
Natalie + Aubrey → 48 - 22 = 26 days

More days to complete the project for Natalie and Aubrey compared to Sophia and Elijah
= 26 - 11
= 15

Answer(s): 15