document.write( "Question 343930: Susan has a number of dimes and quarters in her pocket. \r
\n" ); document.write( "\n" ); document.write( "She has a total of 84 coins, and the total dollar value of all dimes and quarters is $15.\r
\n" ); document.write( "\n" ); document.write( "Write two equations, using variables “d” and “q” to represent the number of dimes and quarters Susan has.\r
\n" ); document.write( "\n" ); document.write( "Solve those two equations using either the substitution or elimination method to find how many dimes and how many quarters she has.
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Algebra.Com's Answer #246035 by stanbon(75887)\"\" \"About 
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She has a total of 84 coins, and the total dollar value of all dimes and quarters is $15.
\n" ); document.write( "Write two equations, using variables “d” and “q” to represent the number of dimes and quarters Susan has.
\n" ); document.write( "Solve those two equations using either the substitution or elimination method to find how many dimes and how many quarters she has.
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\n" ); document.write( "Quantity Eq.:::: d + q = 84
\n" ); document.write( "Value Eq::::::: 10d+25q = 1500 cents
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\n" ); document.write( "Multiply thru the 1st by 10.
\n" ); document.write( "10d + 10q = 10*84
\n" ); document.write( "10d + 25q = 1500
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\n" ); document.write( "Subtract 1st from 2nd and solve for \"q\":
\n" ); document.write( "15q = 660
\n" ); document.write( "q = 44 (# of quarters)
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\n" ); document.write( "Since d+q = 84, d = 40 (# of dimes)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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