document.write( "Question 1055203: Craig has a total of $2.75 in nickels and quarters. He has twice as many quarters as nickels. How many nickels does he have? \n" ); document.write( "

Algebra.Com's Answer #670408 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+n+\"$ = number of nickels he has
\n" ); document.write( "Let $\"+q+\"$ = number of quarters he has
\n" ); document.write( "------------------------------------
\n" ); document.write( "(1) $\"+q+=+2n+\"$
\n" ); document.write( "(2) $\"+5n+%2B+25q+=+275+\"$
\n" ); document.write( "------------------------
\n" ); document.write( "(2) $\"+n+%2B+5q+=+55+\"$
\n" ); document.write( "Plug (1) into (2)
\n" ); document.write( "(2) $\"+n+%2B+5%2A%282n%29+=+55+\"$
\n" ); document.write( "(2) $\"+11n+=+55+\"$
\n" ); document.write( "(2) $\"+n+=+5+\"$
\n" ); document.write( "He has 5 nickels
\n" ); document.write( "-------------------
\n" ); document.write( "check:
\n" ); document.write( "(1) $\"+g+=+2%2A5+\"$
\n" ); document.write( "(1) $\"+q+=+10+\"$
\n" ); document.write( "and
\n" ); document.write( "(2) $\"+5%2A5+%2B+25q+=+275+\"$
\n" ); document.write( "(2) $\"+25+%2B+25q+=+275+\"$
\n" ); document.write( "(2) $\"+25q+=+250+\"$
\n" ); document.write( "(2) $\"+q+=+10+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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