document.write( "Question 250266: My son has a simple problem that I cannot solve.\r
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document.write( "A team has a car wash. They charge $3 for cars and $5 per truck. They was 19 vehicles and make a total of $71.00. How many cars and trucks are washed? \n" );
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Algebra.Com's Answer #182184 by Alan3354(69443) You can put this solution on YOUR website! A team has a car wash. They charge $3 for cars and $5 per truck. They was 19 vehicles and make a total of $71.00. How many cars and trucks are washed? \n" ); document.write( "----------------- \n" ); document.write( "C + T = 19 (total vehicles) \n" ); document.write( "3C + 5T = 71 (total charges) \n" ); document.write( "C + T = 19 --> T = 19-C \n" ); document.write( "Sub for T in 2nd eqn \n" ); document.write( "3C + 5*(19-C) = 71 \n" ); document.write( "3C + 95 - 5C = 71 \n" ); document.write( "-2C = -24 \n" ); document.write( "C = 12 \n" ); document.write( "------ \n" ); document.write( "T = 7 \n" ); document.write( " \n" ); document.write( " |