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

Time taken by Sofia and John = 6 days ---- (1)
Time taken by John and Emma = 7 days ---- (2)
Time taken by Emma and Bryan = 150% x 6 = 9 days ---- (3)

(1) + (2) + (3)
Sofia + John + John + Emma + Emma + Bryan → 6 + 7 + 9 = 22 days
Sofia + 2 (John + Emma) + Bryan → 22 days
Sofia + Bryan + 2 x 7 → 22 days
Sofia + Bryan → 22 - 14 = 8 days

More days to complete the project for Sofia and Bryan compared to John and Emma
= 8 - 7
= 1

Answer(s): 1