document.write( "Question 363261: a girl has 65 coins that are either quarters or dimes. She has a total of $10.85. How many of each type of coin does she have? \n" ); document.write( "
Algebra.Com's Answer #259013 by Mr.positive(13)\"\" \"About 
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A girl has 65 coins that are either quarters or dimes.
\n" ); document.write( "She has a total of $10.85.
\n" ); document.write( "How many of each type of coin does she have?\r
\n" ); document.write( "\n" ); document.write( "Let x represent the number of dimes- dimes: x
\n" ); document.write( "Then, quarters: 65 – x
\n" ); document.write( " dimes + quarters = $10.85\r
\n" ); document.write( "\n" ); document.write( "Dimes are worth 0.10 and quarters are worth 0.25.
\n" ); document.write( "Therefore, multiply x by 0.10 and (65-x) by 0.25 to
\n" ); document.write( "find out how much you have.
\n" ); document.write( " 0.10x + 0.25(65 – x) = 10.85
\n" ); document.write( " Combine like terms and solve for x.
\n" ); document.write( " 0.10x + 16.25 - 0.25x = 10.85
\n" ); document.write( " -0.15x + 16.25 = 10.85
\n" ); document.write( " -0.15x + 16.25 – 16.25 = 10.85 – 16.25
\n" ); document.write( " -0.15x = -5.40
\n" ); document.write( " x = 36
\n" ); document.write( "dimes: x
\n" ); document.write( "quarters: 65 – x\r
\n" ); document.write( "\n" ); document.write( "There are 36 dimes and 65 – 36= 29 quarters!\r
\n" ); document.write( "\n" ); document.write( "mathteacher2010@aol.com
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