If Nathan and Samuel work together on a project, they will complete it in 5 days. If Samuel were to work with Josiah on the same project, they will take a day longer. If Josiah and Owen work together, they will take 180% more time than Nathan and Samuel. If Nathan and Owen were to work together, how many more days will they take to complete the project compared to Samuel and Josiah working together?
Time taken by Nathan and Samuel in percent = 100%
Time taken by Josiah and Owen = 100% + 180% = 280%

Time taken by Nathan and Samuel = 5 days ---- (1)
Time taken by Samuel and Josiah = 6 days ---- (2)
Time taken by Josiah and Owen = 280% x 5 = 14 days ---- (3)

(1) + (2) + (3)
Nathan + Samuel + Samuel + Josiah + Josiah + Owen → 5 + 6 + 14 = 25 days
Nathan + 2 (Samuel + Josiah) + Owen → 25 days
Nathan + Owen + 2 x 6 → 25 days
Nathan + Owen → 25 - 12 = 13 days

More days to complete the project for Nathan and Owen compared to Samuel and Josiah
= 13 - 6
= 7

Answer(s): 7