document.write( "Question 1145765: At a community yard sale, all items were priced at either $2 or $5. A total of 150 items were sold for a total of $405. This situation is modeled by the system of equations shown below, where x represents the number of $2 tem and y represents the number of $5 items. x + y = 150 2x + 5y = 405 Bed on the system of equations, what was the total number of $5 tems sold at the yard sale? \n" ); document.write( "

Algebra.Com's Answer #767014 by ikleyn(52794) $\"\"$ $\"About$

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document.write( "From the first equation, express x = 150 - y  and substitute it into the second equation. \r\n" );
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document.write( "You will get the equation for \"y\", the number of $5 items\r\n" );
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document.write( "    2*(150-y) + 5y = 405   dollars.\r\n" );
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document.write( "From this equation, express \"y\" and calculate\r\n" );
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document.write( "    y =  = 35.\r\n" );
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document.write( "ANSWER.  35 of the $5 items were sold.\r\n" );
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