document.write( "Question 929944: In the summer of 2010, Mr.Butler purchased a pre-owned Ford Expedition that averaged 12.1 miles per gallon. In June 2013 the transmission needed to be rebuild at a cost of $3200. After the transmission was rebuilt the average gas mileage increased to 13.4 miles per gallon. Assuming the cost of gas is $3.50 per gallon, how many miles must be driven for the gas savings to be the same as the cost of the transmission? \n" ); document.write( "
Algebra.Com's Answer #564589 by TimothyLamb(4379)\"\" \"About 
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fuel economy improvement = 13.4 - 12.1 = 1.3 miles/gallon
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\n" ); document.write( "(1/1.3 gallons/mile) * (x miles) * (3.50 $/gallon) = 3200
\n" ); document.write( "(1/1.3) * x * 3.50 = 3200
\n" ); document.write( "x = 3200/((1/1.3) * 3.50)
\n" ); document.write( "x = 1188.56 miles
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