document.write( "Question 287048: The Outdoor Club held a car wash to raise money. They washed cars for $5 each and vans for $7 each. They washed 45 vehicles and earned $243. How many of each type of vehicle did they wash?\r
\n" ); document.write( "\n" ); document.write( "So far I put, \r
\n" ); document.write( "\n" ); document.write( "Let X represent cars
\n" ); document.write( "Let Y represent vans\r
\n" ); document.write( "\n" ); document.write( "I can't think of the two equations. Help! \n" ); document.write( "

Algebra.Com's Answer #208133 by dabanfield(803) $\"\"$ $\"About$

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The Outdoor Club held a car wash to raise money. They washed cars for $5 each and vans for $7 each. They washed 45 vehicles and earned $243. How many of each type of vehicle did they wash?
\n" ); document.write( "So far I put,
\n" ); document.write( "Let X represent cars
\n" ); document.write( "Let Y represent vans
\n" ); document.write( "I can't think of the two equations. Help! \r
\n" ); document.write( "\n" ); document.write( "1.) X + Y = 45
\n" ); document.write( "2.) 5*X + 7*Y = 243\r
\n" ); document.write( "\n" ); document.write( "From 1.) you know that Y = 45 - X.\r
\n" ); document.write( "\n" ); document.write( "Substitute 45 - X for Y in equation 2.):\r
\n" ); document.write( "\n" ); document.write( "5*X + 7*(45-X)= 243\r
\n" ); document.write( "\n" ); document.write( "Solve the equation above for X then calculate Y = 45 - X. \n" ); document.write( "

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