document.write( "Question 1192460: Fifteen children’s books cost $51.25. Some were priced at $2.25 each, and the rest of the books were sold at $4.75 each. How many books were purchased at each price? \n" ); document.write( "

Algebra.Com's Answer #824331 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "Fifteen children’s books cost $51.25. Some were priced at $2.25 each,
\n" ); document.write( "and the rest of the books were sold at $4.75 each.
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document.write( "x books at the price $4.75 each and\r\n" );
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document.write( "(15-x) books at the price of $2.25 each.\r\n" );
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document.write( "Write the total money equation\r\n" );
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document.write( "    4.75x + 2.25*(15-x) = 51.25  dollars.\r\n" );
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document.write( "Simplify and find x\r\n" );
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document.write( "    4.75x + 2.25*15 - 2.25x = 51.25\r\n" );
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document.write( "    4.75x - 2.25x = 51.25 - 2.25*15\r\n" );
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document.write( "       2.50x      =     17.50\r\n" );
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document.write( "           x      =     17.50/2.50 = 7.\r\n" );
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document.write( "ANSWER.  7 books at $4.75 each, and the rest 15-7 = 8 books at $2.25 each.\r\n" );
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document.write( "CHECK total money:  7*4.75 + 8*2.25 = 51.25  dollars.    ! Correct !\r\n" );
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