A and B can do a piece of work in 21 and 24 days respectively.They start the work together and after some days, A leaves and B completes the rest of the task in 9 days. After how many days did A leave?
A. 5 B. 6 C. 7 D. 8
Basic Maths Mcqs
A. 20 days B. 30 days C. 40 days D. none of these
A. 5,750 litres B. 5,760 litres C. 6,890 litres D. None of these