document.write( "Question 1171048: Andrea saved Php370 from her allowance with denominations of 20-peso and 50-peso bills. She had 14 pieces of bills in all. How many did bills of each denomination she have? \n" ); document.write( "

Algebra.Com's Answer #795930 by ikleyn(52787) $\"\"$ $\"About$

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document.write( "Let x be the number of the 50-peso bills;\r\n" );
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document.write( "then the number of the  20-peso bills is  (14-x), OBVIOUSLY.\r\n" );
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document.write( "Then you write the total money equations\r\n" );
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document.write( "    50x + 20*(14-x) = 370  peso.\r\n" );
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document.write( "Next, you simplify and solve this basic equation\r\n" );
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document.write( "    50x + 280 - 20x = 370\r\n" );
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document.write( "    50x - 20x = 370 - 280\r\n" );
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document.write( "       30x    =     90\r\n" );
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document.write( "         x    =     90/30 = 3.\r\n" );
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document.write( "ANSWER.  3 50-peso bills and the rest, 14-3 = 11  20-peso bills.\r\n" );
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document.write( "CHECK.   3*50 + 11*20 = 150 + 220 = 370  peso, total.   ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "The problem is just solved.\r
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\n" ); document.write( "\n" ); document.write( "To see millions of coin problems, solved and carefully explained, look into the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Coin problems\r
\n" ); document.write( "\n" ); document.write( "    - More Coin problems\r
\n" ); document.write( "\n" ); document.write( "    - Solving coin problems without using equations\r
\n" ); document.write( "\n" ); document.write( "    - Kevin and Randy Muise have a jar containing coins\r
\n" ); document.write( "\n" ); document.write( "    - Typical coin problems from the archive\r
\n" ); document.write( "\n" ); document.write( "    - Three methods for solving standard (typical) coin word problems\r
\n" ); document.write( "\n" ); document.write( "    - More complicated coin problems\r
\n" ); document.write( "\n" ); document.write( "    - Advanced coin problems \r
\n" ); document.write( "\n" ); document.write( "    - Solving coin problems mentally by grouping without using equations\r
\n" ); document.write( "\n" ); document.write( "    - Non-typical coin problems \r
\n" ); document.write( "\n" ); document.write( "    - Santa Claus helps solving coin problem\r
\n" ); document.write( "\n" ); document.write( "    - OVERVIEW of lessons on coin word problems\r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "You will find there the lessons for all levels - from introductory to advanced,
\n" ); document.write( "and for all methods used - from one equation to two equations and even without equations. \r
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\n" ); document.write( "\n" ); document.write( "A convenient place to quickly observe these lessons from a \"bird flight height\" (a top view) is the last lesson in the list.\r
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\n" ); document.write( "\n" ); document.write( "Read them and become an expert in solution of coin problems.\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Coin problems\".\r
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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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