document.write( "Question 848511: How much time do you save if you drive 10 mph faster for 100 miles? \n" ); document.write( "
Algebra.Com's Answer #511162 by Alan3354(69443)\"\" \"About 
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How much time do you save if you drive 10 mph faster for 100 miles?
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\n" ); document.write( "It depends on speed.
\n" ); document.write( "If it's 10 mi/hr faster than 10 mi/hr, you \"save\" 5 hours.
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\n" ); document.write( "Difference in time = 100/r - 100/(r+10)
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