Problema Solution
A painter can paint a building in 4 days and his apprentice can do it in 6 days.how long will it take them to paint this building if they work together on it except for 1 day when the painter is ill and the apprentice works alone?
Answer provided by our tutors
In that particular day: 1/6 parts of job done
Rest = 1 - (1/6) = 5/6 parts
1/4 + 1/6 Part in 1 day
5/12 part in 1 day
5/6 part in (12/5) * (5/6) = 2 days
Total = 3 days