If Oliver and Mason work together on a project, they will complete it in 8 days. If Mason were to work with Ava on the same project, they will take a day longer. If Ava and Sofia work together, they will take 50% more time than Oliver and Mason. If Oliver and Sofia were to work together, how many more days will they take to complete the project compared to Mason and Ava working together?
Time taken by Oliver and Mason in percent = 100%
Time taken by Ava and Sofia = 100% + 50% = 150%

Time taken by Oliver and Mason = 8 days ---- (1)
Time taken by Mason and Ava = 9 days ---- (2)
Time taken by Ava and Sofia = 150% x 8 = 12 days ---- (3)

(1) + (2) + (3)
Oliver + Mason + Mason + Ava + Ava + Sofia → 8 + 9 + 12 = 29 days
Oliver + 2 (Mason + Ava) + Sofia → 29 days
Oliver + Sofia + 2 x 9 → 29 days
Oliver + Sofia → 29 - 18 = 11 days

More days to complete the project for Oliver and Sofia compared to Mason and Ava
= 11 - 9
= 2

Answer(s): 2