<PRE><B>Question 479921</B>
The elevator in Washington Monument takes 75 seconds to travel 500 feet to the top floor. What is the speed of the elevator in miles per hour?
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(500/75)(ft/sec)[3600 sec/1hr)(1mi/5280ft) 
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= [500*1*3600*1)/(75*1*1*5280)(miles/hour)
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= 4.55 mph
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Cheers,
Stan H.
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