document.write( "Question 23910: a postal clerk sold 75 stamps for $4.80. some were 5-cent and some were 8-cent stamps. how many of each kind did he sell? \n" ); document.write( "
Algebra.Com's Answer #12621 by Paul(988)\"\" \"About 
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Let x represent the 8-cent stamp
\n" ); document.write( "Let y represent the 5-cent stamp\r
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\n" ); document.write( "\n" ); document.write( "x+y=75
\n" ); document.write( "y=75-x\r
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\n" ); document.write( "\n" ); document.write( "8x+5y=480
\n" ); document.write( "8x+5(75-x)=480
\n" ); document.write( "8x+375-5x=480
\n" ); document.write( "3x = 105
\n" ); document.write( "x = 35\r
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\n" ); document.write( "\n" ); document.write( "y=75-35
\n" ); document.write( "y=40\r
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\n" ); document.write( "\n" ); document.write( "Hence, he sold 40 5-cent stamp and 35 8-cent stamp.
\n" ); document.write( "Paul.
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