document.write( "Question 164537: COIN PURSE CONTAINS A MIXTURE OF 15 COINS IN DIMES AND QUARTERS. THE COINS HAVE A TOTAL VALUE OF $3.30. DETERMINE THE NUMBER OF DIMES AND THE NUMBER OF QUARTERS IN THE PURSE. \n" ); document.write( "

Algebra.Com's Answer #121249 by jojo14344(1513) $\"\"$ $\"About$

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\n" ); document.write( " $\"D%2BQ=15coins\"$ --------------------> EQN 1
\n" ); document.write( "Also,
\n" ); document.write( " $\"0.10D%2B0.25Q=3.30\"$ ---------------> EQN 2
\n" ); document.write( "In EQN 1, we get,
\n" ); document.write( " $\"D=15-Q\"$ -------------------------> EQN 3
\n" ); document.write( "Subst, EQN 3 in EQN 2:
\n" ); document.write( " $\"0.10%2815-Q%29%2B0.25Q=3.30\"$
\n" ); document.write( " $\"1.50-0.10Q%2B0.25Q=3.30\"$
\n" ); document.write( " $\"0.15Q=3.30-1.50=1.80\"$
\n" ); document.write( " $\"cross%280.15%29Q%2Fcross%280.15%29=cross%281.80%2912%2Fcross%280.15%29\"$
\n" ); document.write( " $\"highlight%28Q=12coins%29\"$
\n" ); document.write( "Via EQN 3,
\n" ); document.write( " $\"highlight%28D=15-12=3coins%29\"$
\n" ); document.write( "In doubt? Go back EQN 2,
\n" ); document.write( " $\"0.10%283%29%2B0.25%2812%29=3.30\"$
\n" ); document.write( " $\"0.30%2B3=3.30\"$
\n" ); document.write( " $\"3.30=3.30\"$
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo \n" ); document.write( "

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