document.write( "Question 358888: A piggy bank contains exactly 100 coins that total $5.00. The coins consist of pennies, dimes, and half dollars. How many of the coins are pennies?\r
\n" ); document.write( "\n" ); document.write( "I have tried just by guessing and checking for a while now but still haven't gotten anything. If you could help me that would be awesome.
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Algebra.Com's Answer #256126 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
1.\"P%2BD%2BH=100\"
\n" ); document.write( "2.\"P%2B10D%2B50H=500\"
\n" ); document.write( "Subtract eq. 1 from eq. 2,
\n" ); document.write( "\"P%2B10D%2B50H-P-D-H=500-100\"
\n" ); document.write( "3.\"9D%2B49H=400\"
\n" ); document.write( "Equation 3 has only 1 integer solution.
\n" ); document.write( "\"H=1\"
\n" ); document.write( "\"D=39\"
\n" ); document.write( "Then from eq. 1,
\n" ); document.write( "\"P%2B1%2B39=100\"
\n" ); document.write( "\"P%2B40=100\"
\n" ); document.write( "\"P=60\"
\n" ); document.write( "60 pennies, 39 dimes, and 1 half dollar.
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