If Isaiah and Grace work together on a project, they will complete it in 9 days. If Grace were to work with Josiah on the same project, they will take a day longer. If Josiah and Elijah work together, they will take 200% more time than Isaiah and Grace. If Isaiah and Elijah were to work together, how many more days will they take to complete the project compared to Grace and Josiah working together?
Time taken by Isaiah and Grace in percent = 100%
Time taken by Josiah and Elijah = 100% + 200% = 300%

Time taken by Isaiah and Grace = 9 days ---- (1)
Time taken by Grace and Josiah = 10 days ---- (2)
Time taken by Josiah and Elijah = 300% x 9 = 27 days ---- (3)

(1) + (2) + (3)
Isaiah + Grace + Grace + Josiah + Josiah + Elijah → 9 + 10 + 27 = 46 days
Isaiah + 2 (Grace + Josiah) + Elijah → 46 days
Isaiah + Elijah + 2 x 10 → 46 days
Isaiah + Elijah → 46 - 20 = 26 days

More days to complete the project for Isaiah and Elijah compared to Grace and Josiah
= 26 - 10
= 16

Answer(s): 16