document.write( "Question 593185: Brittany has $9.50 in quarters and dimes. The number of quarters she has is two more than twice the number of dimes. Set up a system of equations and solve for the number of each type of coin she has.\r
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document.write( "what i have so far\r
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document.write( "q=quarters d=dimes \r
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document.write( ".25q+.10d=9.50
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document.write( "q=2+2d \n" );
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Algebra.Com's Answer #376277 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Brittany has $9.50 in quarters and dimes. \n" ); document.write( " The number of quarters she has is two more than twice the number of dimes. \n" ); document.write( " Set up a system of equations and solve for the number of each type of coin she has. \n" ); document.write( "what i have so far \n" ); document.write( "q=quarters d=dimes \n" ); document.write( ".25q+.10d=9.50 \n" ); document.write( "q = 2+2d \n" ); document.write( "Now all you have to do is replace q with (2d+2) in the 1st equation \n" ); document.write( ".25(2d+2) + .10d = 9.50 \n" ); document.write( ".50d + .5 + .10d = 9.50 \n" ); document.write( ".50d + .10d = 9.50 - .50 \n" ); document.write( ".60d = 9.00 \n" ); document.write( "d = \n" ); document.write( "d = 15 dimes \n" ); document.write( ": \n" ); document.write( "I know you can find the number of quarters now. Check your solutions in the 1st equation. \n" ); document.write( " |