document.write( "Question 1199191: A farmer has 1,310 acres of land on which he grows corn, wheat, and soybeans. It costs $45 per acre to grow corn, $60 to grow wheat, and $50 to grow soybeans. Because of market demand the farmer will grow twice as many acres of wheat as of corn. He has allocated $69,550 for the cost of growing his crops. How many acres of each crop should he plant?
\n" );
document.write( "corn acres
\n" );
document.write( "wheat acres
\n" );
document.write( "soybeans acres
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #832923 by ikleyn(52788)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "A farmer has 1,310 acres of land on which he grows corn, wheat, and soybeans. \n" ); document.write( "It costs $45 per acre to grow corn, $60 to grow wheat, and $50 to grow soybeans. \n" ); document.write( "Because of market demand the farmer will grow twice as many acres of wheat as of corn. \n" ); document.write( "He has allocated $69,550 for the cost of growing his crops. \n" ); document.write( "How many acres of each crop should he plant? \n" ); document.write( "~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "x = acres for corn;\r\n" ); document.write( "\r\n" ); document.write( "2x = acres for wheat\r\n" ); document.write( "\r\n" ); document.write( "1310-x-2x = 1310-3x = acres for soybeans (the rest).\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "The money equation is\r\n" ); document.write( "\r\n" ); document.write( " 45x + 60*(2x) + 50*(1310-3x) = 69550 dollars.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "This equation is in one unknown, and you can easily solve it\r\n" ); document.write( "\r\n" ); document.write( " 45x + 120x + 50*1310 - 150x = 69550\r\n" ); document.write( "\r\n" ); document.write( " x =\r \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-----------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The most interesting and educational lesson from this solution is that \n" ); document.write( "the problem can be solved using one equation in one single unknown.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |