document.write( "Question 54451: Dave Bowers collects U.S. gold coins. He has a collection of 46 coins. Some are $10 coins and the rest are $20 coins. If the face value of the coin is $640, then how many of each denoination does he have? Use the six-step method. \n" ); document.write( "
Algebra.Com's Answer #36704 by venugopalramana(3286)\"\" \"About 
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Dave Bowers collects U.S. gold coins. He has a collection of 46 coins. Some are $10 coins( X SAY ) and the rest are $20 coins ( Y SAY ).
\n" ); document.write( "X+Y=46..............OR...........Y=46-X..................1
\n" ); document.write( "If the face value of the coin is $640,
\n" ); document.write( "F.V.OF $10 COINS = 10X
\n" ); document.write( "F.V.OF $20 COINS = 20Y
\n" ); document.write( "TOTAL VALUE = 10X+20Y=10X+20(46-X)=640
\n" ); document.write( "10X+920-20X=640
\n" ); document.write( "10X=920-640=280
\n" ); document.write( "X=28
\n" ); document.write( "Y=46-28=18
\n" ); document.write( "HENCE $ 10 COINS ARE 28 IN NUMBER AND
\n" ); document.write( "$ 20 COINS ARE 18 IN NUMBER \r
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\n" ); document.write( "\n" ); document.write( " then how many of each denoination does he have? Use the six-step method.
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