document.write( "Question 1157861: Christine drives her car 495 miles and has an average of a certain speed. If the average speed had been 2mph more, she could have traveled 517 miles in the same length of time. What was her average speed?\r
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Algebra.Com's Answer #780766 by MathTherapy(10555) $\"\"$ $\"About$

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\n" ); document.write( "Christine drives her car 495 miles and has an average of a certain speed. If the average speed had been 2mph more, she could have traveled 517 miles in the same length of time. What was her average speed?
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Doesn't have to be as complex, and with large numbers as the other person would have you believe.\r
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document.write( "Let the speed be S
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document.write( "Then we get the following TIME equation: 
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document.write( "  ------ Reducing the fractions by factoring out the numerator-GCF, 11
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document.write( "47S = 45(S + 2) ------- Cross-multiplying
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document.write( "47S = 45S + 90
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document.write( "47S - 45S = 90
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document.write( "2S = 90
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document.write( "Average speed or  \n" );
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