document.write( "Question 1168709: Vinnie drives his car 156 miles and has average of a certain speed. If the average speed had been 5mph more. He could have traveled 168 miles jn the same length of time. What was his average speed? \n" ); document.write( "

Algebra.Com's Answer #793311 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "Vinnie drives his car 156 miles and has average of a certain speed. If the average speed had been 5mph more. He could have traveled 168 miles jn the same length of time. What was his average speed?
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Let speed be S
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document.write( "Then we get the following TIME equation: 
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document.write( "168S = 156(S + 5) ------ Cross-multiplying
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document.write( "168S = 156S + 5(156)
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document.write( "168S - 156S = 5(156)
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document.write( "12S = 5(156)
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document.write( "Speed, or  \n" );
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