document.write( "Question 1130451: Solve and verify your answer. \r
\n" ); document.write( "\n" ); document.write( "A dealer bought some radios for a total of $576. She gave away 4 radios as gifts, sold each of the rest for $12 more than she paid for each radio, and broke even. How many radios did she buy? \n" ); document.write( "

Algebra.Com's Answer #747121 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "Let n = \"How many radios did she buy\",  the value under the question.\r\n" );
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document.write( "From the condition, you have this equation\r\n" );
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document.write( " -  = 12.    (*)\r\n" );
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document.write( "576n - 576*(n-4) = 12*n*(n-4)\r\n" );
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document.write( "576*4 = 12*n*(n-4)\r\n" );
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document.write( "n*(n-4) =  = 192.\r\n" );
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document.write( "Answer.  n= 16.\r\n" );
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document.write( "Check.   -  = 12.   ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "If you want to see many other similar problems solved with detailed solutions and explanations, look into the lesson\r
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