document.write( "Question 1175437: A child is collecting state quarters and new $1 coins. If she has a total of 21 coins, and the number of quarters is 9 more than the number of dollar coins, how many of each type of coin does she have?
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Algebra.Com's Answer #801066 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A child is collecting state quarters and new $1 coins. \n" ); document.write( " If she has a total of 21 coins, and the number of quarters is 9 more than the number of dollar coins, how many of each type of coin does she have? \n" ); document.write( "let x = no. of dollar coins \n" ); document.write( "She has 9 more quarter than dollar coins, therefore \n" ); document.write( "(x+9) = no. of quarters \n" ); document.write( ": \n" ); document.write( "x + (x+9) = 21 \n" ); document.write( "2x = 21 - 9 \n" ); document.write( "2x = 12 \n" ); document.write( "x = 12/2 \n" ); document.write( "x = 6 dollar coins \n" ); document.write( ": \n" ); document.write( "I'll let you find the number of quarters, see that they add up to 21 \n" ); document.write( " |