document.write( "Question 737727: A family has two cars. The first car has a fuel efficiency of 35 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 1725 miles, for a total gas consumption of 60 gallons. How many gallons were consumed by each of the two cars that week? \n" ); document.write( "
Algebra.Com's Answer #450522 by josgarithmetic(39618)\"\" \"About 
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Uniform Rates, based on fuel efficiency, units for rates being MILES PER GALLON. The basic relationship equation is r*v=d, where r is the fuel efficiency, v is the volume of fuel, d is the miles.\r
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\n" ); document.write( "\n" ); document.write( "Create and fill information into a table:
\n" ); document.write( "Let x=gallons of fuel used car 1
\n" ); document.write( "Let y=gallons of fuel used car 2\r
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\n" ); document.write( "\n" ); document.write( "Which Car__________rate(mgp)_________fuel volume(gallons)_________distance
\n" ); document.write( "FirstCar___________35________________x____________________________35x
\n" ); document.write( "SecondCar__________20________________y____________________________20y
\n" ); document.write( "TOTAL_______________________________60____________________________1725\r
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\n" ); document.write( "\n" ); document.write( "The equations to use will be the system:
\n" ); document.write( "\"x%2By=60\"
\n" ); document.write( "and
\n" ); document.write( "\"35x%2B20y=1725\"
\n" ); document.write( "Creating and developing all that was the hard part. Now, just solve the system for x and y.
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