SOLUTION: 32 masons can build a wall in 9 days. How many masons can complete it in 24 days?

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Question 555593: 32 masons can build a wall in 9 days. How many masons can complete it in 24 days?
Answer by htmentor(1343) About Me  (Show Source):
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32 masons can build a wall in 9 days. How many masons can complete it in 24 days?
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The rate of work is 32 masons x 9 days = 288 mason-days per wall
So it takes 288 mason-days to build one wall:
288 mason-days/24 days = 12 masons