document.write( "Question 695715: Molly has a collection of coins worth $5.20. She has 8 more nickles than quarters. How many nickels and quarters does Molly have?
\n" ); document.write( "I keep getting decimals for my answers. This is what I got 1.88 quarters and 9.88 nickles.
\n" ); document.write( "my equations that I am using are 5.20=.05n+ .25q and my other equation is n=q+8. I need to solve this using system of equations. Can you help me figure out what I did wrong. \n" ); document.write( "

Algebra.Com's Answer #428638 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+n+\"$ = number of nickels she has
\n" ); document.write( "Let $\"+q+\"$ = number of quarters she has
\n" ); document.write( "given:
\n" ); document.write( "(1) $\"+n+=+q+%2B+8+\"$
\n" ); document.write( "(2) $\"+5n+%2B+25q+=+520+\"$ ( in cents )
\n" ); document.write( "------------------------------
\n" ); document.write( "Substitute (1) into (2)
\n" ); document.write( "(2) $\"+5%2A%28+q+%2B+8+%29+%2B+25q+=+520+\"$
\n" ); document.write( "(2) $\"+5q+%2B+40+%2B+25q+=+520+\"$
\n" ); document.write( "(2) $\"+30q+=+480+\"$
\n" ); document.write( "(2) $\"+q+=+48%2F3+\"$
\n" ); document.write( "(2) $\"+q+=+16+\"$
\n" ); document.write( "and, since
\n" ); document.write( "(1) $\"+n+=+q+%2B+8+\"$
\n" ); document.write( "(1) $\"+n+=+16+%2B+8+\"$
\n" ); document.write( "(1) $\"+n+=+24+\"$
\n" ); document.write( "She has 24 nickels and 16 quarters
\n" ); document.write( "You made some minor mistake
\n" ); document.write( "check answer:
\n" ); document.write( "(2) $\"+5%2A24+%2B+25%2A16+=+520+\"$
\n" ); document.write( "(2) $\"+120+%2B+400+=+520+\"$
\n" ); document.write( "(20 $\"+520+=+520+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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