If Aubrey and Joseph work together on a project, they will complete it in 10 days. If Joseph were to work with David on the same project, they will take a day longer. If David and Jayden work together, they will take 70% more time than Aubrey and Joseph. If Aubrey and Jayden were to work together, how many more days will they take to complete the project compared to Joseph and David working together?
Time taken by Aubrey and Joseph in percent = 100%
Time taken by David and Jayden = 100% + 70% = 170%

Time taken by Aubrey and Joseph = 10 days ---- (1)
Time taken by Joseph and David = 11 days ---- (2)
Time taken by David and Jayden = 170% x 10 = 17 days ---- (3)

(1) + (2) + (3)
Aubrey + Joseph + Joseph + David + David + Jayden → 10 + 11 + 17 = 38 days
Aubrey + 2 (Joseph + David) + Jayden → 38 days
Aubrey + Jayden + 2 x 11 → 38 days
Aubrey + Jayden → 38 - 22 = 16 days

More days to complete the project for Aubrey and Jayden compared to Joseph and David
= 16 - 11
= 5

Answer(s): 5