document.write( "Question 1165699: A farmer buys 100 animals for $100 total. The animals include at least 1 cow, 1 pig and 1 chicken. A cow costs $10, a pig costs $3 and a chicken costs $0.50. If the farmer buys 5 times as many cows as pigs, how many of each animal does he buy?\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #790166 by ikleyn(52776)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "A farmer buys 100 animals for $100 total. The animals include at least 1 cow, 1 pig and 1 chicken. \n" ); document.write( "A cow costs $10, a pig costs $3 and a chicken costs $0.50. If the farmer buys 5 times as many cows as pigs, how many of each animal does he buy? \n" ); document.write( "~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "Let x be the number of pigs.\r\n" ); document.write( "\r\n" ); document.write( "Then the number of cows is 5x and the number of chicken is 100-x-5x = 100-6x.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Then the total money equation is\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " 10*(5x) + 3*x + 0.50*(100-6x) = 100 dollars.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Simplify and solve\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " 50x + 3x + 50 - 3x = 100\r\n" ); document.write( "\r\n" ); document.write( " 50x = 50\r\n" ); document.write( "\r\n" ); document.write( " x = 50/50 = 1 is the number of pigs.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "ANSWER. 1 pig, 5 cows and 100-1-5 = 94 chicken.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "A miracle is that this problem can be solved using one single equation in one single unknown.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |