document.write( "Question 655900: Mary has $2.15 in a jar that is entirely made up of dimes and nickles. there are 30 coins total. How many dimes and nickles does she have.
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document.write( "I can guess and check this problem, but how do I put this into an equation and solve? Thanks \n" );
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Algebra.Com's Answer #409291 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Mary has $2.15 in a jar that is entirely made up of dimes and nickles. there are 30 coins total. How many dimes and nickles does she have. \n" ); document.write( "-------------------- \n" ); document.write( "d + n = 30 \n" ); document.write( "10d + 5n = 215 \n" ); document.write( " \n" ); document.write( " |