document.write( "Question 124646: Solve. Be sure to show the equations used for the solution.\r
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document.write( "Jill has $3.50 in nickels and dimes. If she has 50 coins, how many of each type of coin does she have?\r
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document.write( "Let x = nickels
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document.write( "Let y = dimes\r
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document.write( "Show your solution below:\r
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document.write( "How many nickels?\r
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document.write( "How many dimes? \r
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document.write( "
Algebra.Com's Answer #91361 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Jill has $3.50 in nickels and dimes. If she has 50 coins, how many of each type of coin does she have? \n" ); document.write( "Let x = nickels \n" ); document.write( "Let y = dimes \r \n" ); document.write( "\n" ); document.write( "----------------------- \n" ); document.write( "EQUATIONS: \n" ); document.write( "Quantity: x+y = 50 \n" ); document.write( "Value : 5x + 10y = 350 \n" ); document.write( "---------------------------- \n" ); document.write( "y = 50-x \n" ); document.write( "Substitute: \n" ); document.write( "5x + 10(50-x) = 350 \n" ); document.write( "5x + 500 - 10x = 350 \n" ); document.write( "-5x = - 150 \n" ); document.write( "x = 30 (# of nickels) \n" ); document.write( "y = 50-x = 20 (# of dimes) \n" ); document.write( "------------------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |