document.write( "Question 162881: Ruth purchases some $.01 stamps, some $.15 stamps and some $.20 stamps. She has spend a total of $5.00. There are three times as many $.01 stamps as $.20 stamps and 8 more $.15 stamps than $.20 stamps. How many stamps in all does she buy? \n" ); document.write( "
Algebra.Com's Answer #120042 by checkley77(12844)\"\" \"About 
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.01*3X+.15(X+8)+.20X=5.00
\n" ); document.write( ".03X+.15X+1.2+.20X=5.00
\n" ); document.write( ".38X=5.00-1.20
\n" ); document.write( ".38X=3.80
\n" ); document.write( "X=3.80/.38
\n" ); document.write( "X=10 .20 CENT STANPS WERE PERDHASED.
\n" ); document.write( "3*10=30 .01 CENT STAMPS WERE PURCHASED.
\n" ); document.write( "10+8=18 .15 CENT STAMPS WERE PURCHASED.
\n" ); document.write( "10+30+18=58 A TOTAL OF 58 STAMPS WERE PURCHASED.
\n" ); document.write( "PROOF:
\n" ); document.write( ".01*30+.15*18+.20*10=5.00
\n" ); document.write( ".30+2.70+2.00=5.00
\n" ); document.write( "5.00=5.00\r
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