document.write( "Question 899493: a coin bank conatins fifty coins in dimes and quarters. the coins have a total value of $8.60. find the number of dimes in the bank \n" ); document.write( "
Algebra.Com's Answer #545447 by richwmiller(17219)\"\" \"About 
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d+q=50,
\n" ); document.write( "10*d+25*q=860
\n" ); document.write( "d=50-q
\n" ); document.write( "10*(50-q)+25*q=860
\n" ); document.write( "500-10q+25*q=860
\n" ); document.write( "15*q=360
\n" ); document.write( "q=24
\n" ); document.write( "d=50-q
\n" ); document.write( "d=26 q=24
\n" ); document.write( "check
\n" ); document.write( "26+24=50
\n" ); document.write( "10*d+25*q=860
\n" ); document.write( "10*26+25*24=860
\n" ); document.write( "260+600=860
\n" ); document.write( "860=860
\n" ); document.write( "ok\r
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