document.write( "Question 48604: a coin collector has $45 in quarters and dimes. How many coins of each does he have is the total number of his coins is 240? \r
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Algebra.Com's Answer #42968 by ptaylor(2198)\"\" \"About 
You can put this solution on YOUR website!
Let x=Number of dimes
\n" ); document.write( "Then 240-x=Number of quarters\r
\n" ); document.write( "\n" ); document.write( "Note: Whatever monetary units we deal in (pennies, nickels, dollars, etc.), we have to be consistent. I choose to deal in pennies.\r
\n" ); document.write( "\n" ); document.write( "Now we know that the amount of money in dimes (x)(10) plus the amount of money in quarters (240-x)(25)equals the total amount of money (4500). Thus, our equation to solve is:
\n" ); document.write( "10x+(240-x)(25)=4500 simplifying, we get:
\n" ); document.write( "10x+6000-25x=4500 or
\n" ); document.write( "-15x=-6000+4500=-1500
\n" ); document.write( "x=100 dimes
\n" ); document.write( "240-x=240-100=140 quarters\r
\n" ); document.write( "\n" ); document.write( "Hope this helps ----ptaylor\r
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