document.write( "Question 1198222: Michael drove 864 miles in 12 hours.
\n" ); document.write( "At the same rate, how long would it take him to drive 504 miles?
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Algebra.Com's Answer #831780 by math_tutor2020(3817)\"\" \"About 
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\n" ); document.write( "We'll use the information given in the first sentence to determine the average rate or speed.
\n" ); document.write( "distance = rate*time
\n" ); document.write( "rate = distance/time
\n" ); document.write( "rate = (864 miles)/(12 hours)
\n" ); document.write( "rate = (864/12) mph
\n" ); document.write( "rate = 72 mph\r
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\n" ); document.write( "\n" ); document.write( "Then let's see how long it takes to drive 504 miles at this speed.
\n" ); document.write( "distance = rate*time
\n" ); document.write( "time = distance/rate
\n" ); document.write( "time = (504 miles)/(72 mph)
\n" ); document.write( "time = (504/72) hours
\n" ); document.write( "time = 7 hours\r
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\n" ); document.write( "\n" ); document.write( "In a theoretical framework, this answer is valid. Realistically Michael is likely to take breaks here and there, or perhaps get gas.
\n" ); document.write( "This means the realistic time value is probably a bit larger than 7 hours. But we can get a good ballpark estimate at least.
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