document.write( "Question 1150140: Ophel has Php53.00 in 5 peso and 1 peso coins pieces. If she has 25 coins all, how many has she of each kind? \n" ); document.write( "

Algebra.Com's Answer #771608 by ikleyn(52787) $\"\"$ $\"About$

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document.write( "     x +  y = 25      (1)    (counting coins)\r\n" );
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document.write( "    5x + 1y = 53      (2)    (counting money)\r\n" );
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document.write( "Subtract equation (1) from equation (2) and solve for x\r\n" );
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document.write( "     4x     = 53 - 25 = 28\r\n" );
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document.write( "      x               = 28/4 = 7.\r\n" );
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document.write( "ANSWER.  7 5-peso coins and the rest, 25-7 = 18 1-peso coins.\r\n" );
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document.write( "CHECK.   7*5 + 18*1 = 35 + 18 = 53 Php.    ! Precisely correct !\r\n" );
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