document.write( "Question 183387: After selling tickets at school, Jeff had $6.00 in dime and quarters. If Jeff had 39 coins in total, how many of each coin did he have?\r
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document.write( "Can you help me with this? \n" );
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Algebra.Com's Answer #137723 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! After selling tickets at school, Jeff had $6.00 in dime and quarters. If Jeff had 39 coins in total, how many of each coin did he have? \n" ); document.write( "-------------- \n" ); document.write( "Quantity Equation: d + q = 39 \n" ); document.write( "Value Equation...:10d + 25q = 600 cents \n" ); document.write( "---------------------------------- \n" ); document.write( "Modify: \n" ); document.write( "10d + 10q = 10*39 \n" ); document.write( "10d + 25q = 600 \n" ); document.write( "----------------------- \n" ); document.write( "Subtract 1st from 2nd to get: \n" ); document.write( "15q = 600-390 \n" ); document.write( "q = 14 (# of quarters) \n" ); document.write( "---------------- \n" ); document.write( "Since d + q = 39, d + 14 = 39 \n" ); document.write( "So, d = 15 (# of dimes) \n" ); document.write( "========================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |