document.write( "Question 1060910: Keana’s piggy bank contains $4.30 in nickels and dimes only. If she has 59 coins in her bank, then what is the sum of the digits in the number of nickels in Keana’s bank? Write a system of equations for this situation and find its solution. \r
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Algebra.Com's Answer #675749 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+n+\"$ = number of nickels
\n" ); document.write( "Let $\"+d+\"$ = number of dimes
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\n" ); document.write( "(1) $\"+n+%2B+d+=+59+\"$
\n" ); document.write( "(2) $\"+5n+%2B+10d+=+430+\"$
\n" ); document.write( "---------------------------
\n" ); document.write( "Subtract (1) from (2)
\n" ); document.write( "(2) $\"+n+%2B+2d+=+86+\"$
\n" ); document.write( "(1) $\"+-n+-+d+=+-59+\"$
\n" ); document.write( "----------------------
\n" ); document.write( " $\"+d+=+27+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+n+%2B+d+=+59+\"$
\n" ); document.write( "(1) $\"+n+%2B+27+=+59+\"$
\n" ); document.write( "(1) $\"+n+=+32+\"$
\n" ); document.write( " $\"+3+%2B+2+=+5+\"$
\n" ); document.write( "The sum of the digits in number of nickels
\n" ); document.write( "is 5
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\n" ); document.write( "(2) $\"+5n+%2B+10d+=+430+\"$
\n" ); document.write( "(2) $\"+5%2A32+%2B+10%2A27+=+430+\"$
\n" ); document.write( "(2) $\"+160+%2B+270+=+430+\"$
\n" ); document.write( "(2) $\"+430+=+430+\"$
\n" ); document.write( "OK\r
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