If Henry and Ryan work together on a project, they will complete it in 6 days. If Ryan were to work with Maya on the same project, they will take a day longer. If Maya and Harris work together, they will take 50% more time than Henry and Ryan. If Henry and Harris were to work together, how many more days will they take to complete the project compared to Ryan and Maya working together?
Time taken by Henry and Ryan in percent = 100%
Time taken by Maya and Harris = 100% + 50% = 150%

Time taken by Henry and Ryan = 6 days ---- (1)
Time taken by Ryan and Maya = 7 days ---- (2)
Time taken by Maya and Harris = 150% x 6 = 9 days ---- (3)

(1) + (2) + (3)
Henry + Ryan + Ryan + Maya + Maya + Harris → 6 + 7 + 9 = 22 days
Henry + 2 (Ryan + Maya) + Harris → 22 days
Henry + Harris + 2 x 7 → 22 days
Henry + Harris → 22 - 14 = 8 days

More days to complete the project for Henry and Harris compared to Ryan and Maya
= 8 - 7
= 1

Answer(s): 1