document.write( "Question 1042715: a car travels at a constant speed for 450km if the average speed was increased by 15km/h the journey would have taken 90 min less find speed of car \n" ); document.write( "

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\n" ); document.write( "a car travels at a constant speed for 450km if the average speed was increased by 15km/h the journey would have taken 90 min less find speed of car
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Let speed of car be S
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document.write( "Then hypothetical speed = S + 15
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document.write( "We then get the following TIME equation: _____
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document.write( "450(2)(S + 15) = 450(2S) + 3S(S + 15) --------- Multiplying by LCD, 2S(S + 15) 
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document.write( " ======> 
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document.write( "Factor the trinomial on the left to solve for S: the speed of the car. You should get  \n" );
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