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