If Mason and Lilian work together on a project, they will complete it in 10 days. If Lilian were to work with Hannah on the same project, they will take a day longer. If Hannah and John work together, they will take 160% more time than Mason and Lilian. If Mason and John were to work together, how many more days will they take to complete the project compared to Lilian and Hannah working together?
Time taken by Mason and Lilian in percent = 100%
Time taken by Hannah and John = 100% + 160% = 260%

Time taken by Mason and Lilian = 10 days ---- (1)
Time taken by Lilian and Hannah = 11 days ---- (2)
Time taken by Hannah and John = 260% x 10 = 26 days ---- (3)

(1) + (2) + (3)
Mason + Lilian + Lilian + Hannah + Hannah + John → 10 + 11 + 26 = 47 days
Mason + 2 (Lilian + Hannah) + John → 47 days
Mason + John + 2 x 11 → 47 days
Mason + John → 47 - 22 = 25 days

More days to complete the project for Mason and John compared to Lilian and Hannah
= 25 - 11
= 14

Answer(s): 14