document.write( "Question 570850: Your piggy bank contains $19.75 in dimes and quarters. There are 100 coins in all. How many dimes are there? \n" ); document.write( "

Algebra.Com's Answer #367804 by JBarnum(2146) $\"\"$ $\"About$

You can put this solution on YOUR website!
these are fun questions, brings me back to learning to count with money..anyway
\n" ); document.write( "dimes(d) and quarters(q)
\n" ); document.write( "given
\n" ); document.write( "dimes are worth .10 and quarters are worth .25
\n" ); document.write( " $\".10%28d%29%2B.25%28q%29=19.75\"$
\n" ); document.write( " $\"d%2Bq=100\"$
\n" ); document.write( ".
\n" ); document.write( "to solve for (d) you must substitute for (q)
\n" ); document.write( " $\"q=highlight%28100-d%29\"$
\n" ); document.write( " $\".10%28d%29%2B.25%28q%29=19.75\"$
\n" ); document.write( " $\".10%28d%29%2B.25%28highlight%28100-d%29%29=19.75\"$
\n" ); document.write( " $\".10d%2B25-.25d=19.75\"$
\n" ); document.write( " $\"25-.15d=19.75\"$
\n" ); document.write( " $\"25=19.75%2B.15d\"$
\n" ); document.write( " $\"25-19.75=.15d\"$
\n" ); document.write( " $\"5.25=.15d\"$
\n" ); document.write( " $\"highlight%2835=d%29\"$
\n" ); document.write( " \n" ); document.write( "

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