<PRE><B>Question 564947</B>
If a train travels at a speed of 40 miles per hour, what is its speed feet per minute?
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You can use 
1 mile = 5280 feet
1 hour = 3600 seconds
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Or, you can use that 15 mi/hr = 22 ft/sec
40:15::r:22
15r = 800
r =~ 58.667 ft/sec
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