document.write( "Question 549091: A stack of 25 U. S. nickels has a height of approximately 1.925 inches. What is the value, in dollars, of a 7-foot high stack of U. S. nickels? Express your answer to the nearest cent. Show or explain how you got your answer. \n" ); document.write( "
Algebra.Com's Answer #357495 by Edwin McCravy(20060)\"\" \"About 
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A stack of 25 U. S. nickels has a height of approximately 1.925 inches. What is the value, in dollars, of a 7-foot high stack of U. S. nickels? Express your answer to the nearest cent. Show or explain how you got your answer.
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document.write( "This is the proportion:\r\n" );
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document.write( "height of short stack of nickels   value of short stack of nickels\r\n" );
document.write( "———————————————————————————————— = ————————————————————————————————— \r\n" );
document.write( "height of tall stack of nickels     value of tall stack of nickels\r\n" );
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document.write( "But we must first change the 7 feet height of the tall stack to inches.\r\n" );
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document.write( "\"7ft%2F1\"×\"%2812in%29%2F%281ft%29\" = \"7cross%28ft%29%2F1\"×\"%2812in%29%2F%281cross%28ft%29%29\" = 84in\r\n" );
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document.write( "and we change the 25 nickels to money \r\n" );
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document.write( "\"%2825nickels%29%2F1\"×\"%22%24.05%22%2F%281nickel%29\" = \"%2825cross%28nickels%29%29%2F1\"×\"%22%24.05%22%2F%281cross%28nickel%29%29\" = $1.25\r\n" );
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document.write( "And we let x be the value in money of the tall stack.\r\n" );
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document.write( "Now we substitute in the above proportion:\r\n" );
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document.write( " 1.925    $1.25   \r\n" );
document.write( " ————— = —————— \r\n" );
document.write( "   84       x\r\n" );
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document.write( "Now we cross multiply:\r\n" );
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document.write( "1.925x = ($1.25)(84)\r\n" );
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document.write( "1.925x = $105\r\n" );
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document.write( "Divide both sides by 1.925\r\n" );
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document.write( "\"1.925%2F1.925\"x = \"%22%24105%22%2F1.925\"\r\n" );
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document.write( "     x = $54.54545455\r\n" );
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document.write( "That rounds to  $54.55.\r\n" );
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document.write( "Edwin

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