If Matthew and Ellie work together on a project, they will complete it in 6 days. If Ellie were to work with Natalie on the same project, they will take a day longer. If Natalie and Victoria work together, they will take 150% more time than Matthew and Ellie. If Matthew and Victoria were to work together, how many more days will they take to complete the project compared to Ellie and Natalie working together?
Time taken by Matthew and Ellie in percent = 100%
Time taken by Natalie and Victoria = 100% + 150% = 250%

Time taken by Matthew and Ellie = 6 days ---- (1)
Time taken by Ellie and Natalie = 7 days ---- (2)
Time taken by Natalie and Victoria = 250% x 6 = 15 days ---- (3)

(1) + (2) + (3)
Matthew + Ellie + Ellie + Natalie + Natalie + Victoria → 6 + 7 + 15 = 28 days
Matthew + 2 (Ellie + Natalie) + Victoria → 28 days
Matthew + Victoria + 2 x 7 → 28 days
Matthew + Victoria → 28 - 14 = 14 days

More days to complete the project for Matthew and Victoria compared to Ellie and Natalie
= 14 - 7
= 7

Answer(s): 7