Q11
A can complete a piece of work in 36 days, B in 54 days and C in 72 days. All the three began the work the work together but A left 8 days before the completion of the work and B 12 days before the completion of work. Only C worked up to the end. In how many days was the work completed?
A.
24 days
AnswerB.
25 days
C.
27 days
D.
30 days
Answer: Option A
Solution
Answer: Option A
Solution:
Let the work be completed in x days. C work for x days then A works for (x - 8) days and B works for (x - 12) days.According to the question,