document.write( "Question 561637: Please work it out.\r
\n" ); document.write( "\n" ); document.write( "a car travels 108 miles on 9 liters of gas. How many miles will it travel on 21 liters?
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Algebra.Com's Answer #364332 by Maths68(1474)\"\" \"About 
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9 litres.............108 miles
\n" ); document.write( "9/9 litres...........108/9 miles
\n" ); document.write( "1 litre..............12 miles
\n" ); document.write( "21*1 litre...........12*21 miles
\n" ); document.write( "21 litres............252 miles
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