document.write( "Question 273158: I have tried and tried to solve this! Can you help me?!\r
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document.write( "Mr. Graham invested some of his $18,000 in bonds that made a 5% profit and the rest in bonds that made a 12% profit. If the profit on the 12% bonds was $885 more than the profit on the 5% bonds, ow much did Mr. Graham invest in the 5% bonds?\r
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document.write( "I would really like to understand this!! \n" );
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Algebra.Com's Answer #199576 by mananth(16946)![]() ![]() You can put this solution on YOUR website! Mr. Graham invested some of his $18,000 in bonds that made a 5% profit and the rest in bonds that made a 12% profit. If the profit on the 12% bonds was $885 more than the profit on the 5% bonds, ow much did Mr. Graham invest in the 5% bonds?\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Let him invest x in 5% bonds\r \n" ); document.write( "\n" ); document.write( "5%bonds-----------------12%bonds-------------- Total\r \n" ); document.write( "\n" ); document.write( "x------------------------18000-x---------------18000 ( Investment)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "0.05x--------------------0.12(18000-x) ( interest)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The difference betwen 12% bond interest and 5% bond interest is $885\r \n" ); document.write( "\n" ); document.write( "0.12(18000-x) -0.05x=885\r \n" ); document.write( "\n" ); document.write( "2160 - 0.12x -0.05x = 885\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-0.17x =-2160+885\r \n" ); document.write( "\n" ); document.write( "-0.17x = -1275\r \n" ); document.write( "\n" ); document.write( "x= -1275/0.17\r \n" ); document.write( "\n" ); document.write( "=7500\r \n" ); document.write( "\n" ); document.write( "He invested $ 7500 in 5% bonds\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |