document.write( "Question 449140: A family has two cars. The first car has a fuel efficiency of 25 miles per gallon of gas and the second has a fuel efficiency of 20 miles per gallon of gas. During one particular week, the two cars went a combined total of 1150 miles, for a total gas consumption of 50 gallons. How many gallons were consumed by each of the two cars that week? \n" ); document.write( "
Algebra.Com's Answer #309004 by rwm(914)\"\" \"About 
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a+b=50
\n" ); document.write( "25a+20b=1150
\n" ); document.write( "a=30
\n" ); document.write( "b-20\r
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