document.write( "Question 1155618: Alexa makes a journey of 430km, traveling 160km by bus and 270km by car. If the car
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Algebra.Com's Answer #778238 by MathTherapy(10555) $\"\"$ $\"About$

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Alexa makes a journey of 430km, traveling 160km by bus and 270km by car. If the car
\n" ); document.write( "averages 10km/h faster than the bus and the whole journey takes 5 hours, what is the
\n" ); document.write( "speed of the car?
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Once again, this can be done MUCH, MUCH simpler! No need to use the quadratic equation formula!
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document.write( "Let the car's speed be S
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document.write( "Then the bus' speed = S - 10
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document.write( "We then get the following TIME equation: 
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document.write( " ------ Factoring out GCF, 5, in numerator
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document.write( "32S + 54(S - 10) = S(S - 10) -------- Multiplying by LCD, S(S - 10) 
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document.write( "(S - 90)(S - 6) = 0
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document.write( "S, or speed of car =            OR            S = 6 (ignore) \n" );
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