Question
A can complete a piece of work in 18 days. B can
complete the same work in 72 days. While C is 33(1/3)Â more efficient than B. All three started working together. A left 8 days before the work was completed, and C left 17 days before but B continued to work till the end, for how many days did A work?Solution
Given C is 33.33% is more efficient than B. 
But A left before 8 days = 18-8 = 10 Days So A worked only 10 Days.
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