If Leah and Elijah work together on a project, they will complete it in 10 days. If Elijah were to work with Josiah on the same project, they will take a day longer. If Josiah and Gabriel work together, they will take 150% more time than Leah and Elijah. If Leah and Gabriel were to work together, how many more days will they take to complete the project compared to Elijah and Josiah working together?
Time taken by Leah and Elijah in percent = 100%
Time taken by Josiah and Gabriel = 100% + 150% = 250%

Time taken by Leah and Elijah = 10 days ---- (1)
Time taken by Elijah and Josiah = 11 days ---- (2)
Time taken by Josiah and Gabriel = 250% x 10 = 25 days ---- (3)

(1) + (2) + (3)
Leah + Elijah + Elijah + Josiah + Josiah + Gabriel → 10 + 11 + 25 = 46 days
Leah + 2 (Elijah + Josiah) + Gabriel → 46 days
Leah + Gabriel + 2 x 11 → 46 days
Leah + Gabriel → 46 - 22 = 24 days

More days to complete the project for Leah and Gabriel compared to Elijah and Josiah
= 24 - 11
= 13

Answer(s): 13