document.write( "Question 314705: janet has 3 times as many dimes as nickles, and twice as many quarters as nickles. if she has $3.40 in all, how many nickles,dimes and quarters does she have? \n" ); document.write( "
Algebra.Com's Answer #225100 by josmiceli(19441)\"\" \"About 
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Let \"n\" = number of nickels
\n" ); document.write( "Let \"d\" = number of dimes
\n" ); document.write( "Let \"q\" = number of quarters
\n" ); document.write( "given:
\n" ); document.write( "\"d+=+3n\"
\n" ); document.write( "\"q+=+2n\"
\n" ); document.write( "\"5n+%2B+10d+%2B+25q+=+340\" (in cents)
\n" ); document.write( "By substitution:
\n" ); document.write( "\"5n+%2B+10%2A%283n%29+%2B+25%2A%282n%29+=+340\"
\n" ); document.write( "\"5n+%2B+30n+%2B+50n+=+340\"
\n" ); document.write( "\"85n+=+340\"
\n" ); document.write( "\"n+=+4\"
\n" ); document.write( "and, since
\n" ); document.write( "\"d+=+3n\"
\n" ); document.write( "\"d+=+3%2A4\"
\n" ); document.write( "\"d+=+12\"
\n" ); document.write( "and
\n" ); document.write( "\"q+=+2n\"
\n" ); document.write( "\"q+=+2%2A4\"
\n" ); document.write( "\"q+=+8\"
\n" ); document.write( "She has 4 nickels, 12 dimes and 8 quarters
\n" ); document.write( "check:
\n" ); document.write( "\"5n+%2B+10d+%2B+25q+=+340\"
\n" ); document.write( "\"5%2A4+%2B+10%2A12+%2B+25%2A8+=+340\"
\n" ); document.write( "\"20+%2B+120+%2B+200+=+340\"
\n" ); document.write( "\"340+=+340\"
\n" ); document.write( "OK
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