document.write( "Question 892005: Christine drove 200 miles using 9 gallons of gas. At this rate, how many gallons of gas would she need to drive 420 miles? \n" ); document.write( "
Algebra.Com's Answer #540194 by rfer(16322)\"\" \"About 
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200/9=420/x
\n" ); document.write( "200x=3780
\n" ); document.write( "x=3780/200
\n" ); document.write( "x=18.9 gal
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