document.write( "Question 1202217: Mayra has $0.25 in nickels and dimes. The number of dimes is 5 less than twice the number of nickels. Find the number of nickels, n, by solving the equation (you must show work to receive credit for this problem)\r
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document.write( "0.05n+0.10(2n-5)=0.25 \n" );
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Algebra.Com's Answer #836882 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Mayra has $0.25 in nickels and dimes. The number of dimes is 5 less than twice the number of nickels. Find the number of nickels, n, by solving the equation (you must show work to receive credit for this problem) \n" ); document.write( "---------------- \n" ); document.write( "0.05n+0.10(2n-5)=0.25 \n" ); document.write( "0.05n + 0.2n - 0.5 = 0.25 \n" ); document.write( "0.25n = 0.75 \n" ); document.write( "n = 3 nickels \n" ); document.write( "========================== \n" ); document.write( "There are only 3 possible combinations: \n" ); document.write( "1 N and 2 D's \n" ); document.write( "or 3 N and 1 D \n" ); document.write( "or 5 N's \n" ); document.write( "-------------------- \n" ); document.write( "I have 2 coins that total 30 cents. \n" ); document.write( "One of them is not a nickel. What are they? \n" ); document.write( " |