If Hazel and Olivia work together on a project, they will complete it in 10 days. If Olivia were to work with Violet on the same project, they will take a day longer. If Violet and Christian work together, they will take 160% more time than Hazel and Olivia. If Hazel and Christian were to work together, how many more days will they take to complete the project compared to Olivia and Violet working together?
Time taken by Hazel and Olivia in percent = 100%
Time taken by Violet and Christian = 100% + 160% = 260%

Time taken by Hazel and Olivia = 10 days ---- (1)
Time taken by Olivia and Violet = 11 days ---- (2)
Time taken by Violet and Christian = 260% x 10 = 26 days ---- (3)

(1) + (2) + (3)
Hazel + Olivia + Olivia + Violet + Violet + Christian → 10 + 11 + 26 = 47 days
Hazel + 2 (Olivia + Violet) + Christian → 47 days
Hazel + Christian + 2 x 11 → 47 days
Hazel + Christian → 47 - 22 = 25 days

More days to complete the project for Hazel and Christian compared to Olivia and Violet
= 25 - 11
= 14

Answer(s): 14