document.write( "Question 1168128: A family has two cars. The first car has a fuel efficiency of 40 miles per gallon of gas and the second has a fuel efficiency of 25 miles per gallon of gas. During one particular week, the two cars went a combined total of 1575 miles, for a total gas consumption of 45 gallons. How many gallons were consumed by each of the two cars that week? \n" ); document.write( "
Algebra.Com's Answer #792751 by josgarithmetic(39617)\"\" \"About 
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document.write( "v, the gallons that first car used\r\n" );
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document.write( "            fuel efficency     volume        miles\r\n" );
document.write( "Firstcar       40                v           40v\r\n" );
document.write( "Secondcar      25               45-v         25(45-v)\r\n" );
document.write( "Totals                          45           1575\r\n" );
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\n" ); document.write( "First solve for first car's fuel volume used v, in gallons:
\n" ); document.write( "\"40v%2B25%2845-v%29=1575\"\r
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