document.write( "Question 819781: Charles has $2.75 in dimes and nickles. The number of nickles is one less than twice the number of dimes.How many of each type of coin does he have? \n" ); document.write( "
Algebra.Com's Answer #493215 by TimothyLamb(4379)\"\" \"About 
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5n + 10d = 275
\n" ); document.write( "n = 2d - 1
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\n" ); document.write( "5n + 10d = 275
\n" ); document.write( "5(2d - 1) + 10d = 275
\n" ); document.write( "10d - 5 + 10d = 275
\n" ); document.write( "20d = 280
\n" ); document.write( "---
\n" ); document.write( "d = 14
\n" ); document.write( "n = 27
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