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

Time taken by Roshel and Andrew = 10 days ---- (1)
Time taken by Andrew and Zoe = 11 days ---- (2)
Time taken by Zoe and Samuel = 150% x 10 = 15 days ---- (3)

(1) + (2) + (3)
Roshel + Andrew + Andrew + Zoe + Zoe + Samuel → 10 + 11 + 15 = 36 days
Roshel + 2 (Andrew + Zoe) + Samuel → 36 days
Roshel + Samuel + 2 x 11 → 36 days
Roshel + Samuel → 36 - 22 = 14 days

More days to complete the project for Roshel and Samuel compared to Andrew and Zoe
= 14 - 11
= 3

Answer(s): 3