<PRE><B>Question 870732</B>
3 men build a wall in 4 days
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1 man will take three times as long
to build the wall, so
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1 man can build the wall in 12 days
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5 times as many men will take 1/5 of that
time to build the wall, so
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5 men can build the wall in {{{ 12/5 = 2.4 }}} days

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