document.write( "Question 1160367: A lawyer invested a certain amount of money in a restaurant business, expecting the earnings to be 9% per year. He invested thrice the amount in a retail business, expecting the earnings to be 11% per year. If after a year, the total interest from the investment is 63,000, how much did he invest in the restaurant business? \n" ); document.write( "

Algebra.Com's Answer #783654 by ikleyn(52786) $\"\"$ $\"About$

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document.write( "0.09*x + 0.11*(3x) = 63000\r\n" );
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document.write( "0.09x + 0.33x = 63000\r\n" );
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document.write( "0.42x          = 63000\r\n" );
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document.write( "   x          =  = 150000.     ANSWER\r\n" );
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