If Sophia and Jayden work together on a project, they will complete it in 10 days. If Jayden were to work with Hazel on the same project, they will take a day longer. If Hazel and David work together, they will take 150% more time than Sophia and Jayden. If Sophia and David were to work together, how many more days will they take to complete the project compared to Jayden and Hazel working together?
Time taken by Sophia and Jayden in percent = 100%
Time taken by Hazel and David = 100% + 150% = 250%

Time taken by Sophia and Jayden = 10 days ---- (1)
Time taken by Jayden and Hazel = 11 days ---- (2)
Time taken by Hazel and David = 250% x 10 = 25 days ---- (3)

(1) + (2) + (3)
Sophia + Jayden + Jayden + Hazel + Hazel + David → 10 + 11 + 25 = 46 days
Sophia + 2 (Jayden + Hazel) + David → 46 days
Sophia + David + 2 x 11 → 46 days
Sophia + David → 46 - 22 = 24 days

More days to complete the project for Sophia and David compared to Jayden and Hazel
= 24 - 11
= 13

Answer(s): 13