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1. |
Q: A can build a wall in 16 days while B can destroy it in 8 days. A worked for 5 days. Then B joined with A for the next 2 days. Find in how many days could A build the remaining wall ? |
A. | 12 days |
B. | 14 days |
C. | 13 days |
D. | 16 days |
Answer» D. 16 days | |