document.write( "Question 967395: A car travels 120 miles. A second car traveling 10 mph faster than the first car.makes the same trip in 1 hr less time. Find speed of each car. \n" ); document.write( "

Algebra.Com's Answer #591279 by MathTherapy(10555) $\"\"$ $\"About$

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\n" ); document.write( "A car travels 120 miles. A second car traveling 10 mph faster than the first car.makes the same trip in 1 hr less time. Find speed of each car.
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Let speed of slower car be S
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document.write( "Then speed of faster car is: S + 10
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document.write( "We then get: 
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document.write( " ------- Multiplying by LCD, S(S + 10)
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document.write( "(S - 30)(S + 40) = 0 
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document.write( "S, or speed of slower car =  mph        OR         S = - 40 (ignore)
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document.write( "Speed of faster car: 30 + 10, or  mph \n" );
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