document.write( "Question 291019: A box contains $6.25 in nickels, dimes, and quarters. There are 85 coins in all, with three times as many nickels as dimes. How many quarters are there. \n" ); document.write( "
Algebra.Com's Answer #210569 by Greenfinch(383)\"\" \"About 
You can put this solution on YOUR website!
no of dimes is X, no of nickels is 3X, no of quarters is 85 - 4X
\n" ); document.write( "so 10X + (3Xx5) + (85 - 4x)x25 = 625 (do it all in cents)
\n" ); document.write( "10X + 15X + 2125 -100X = 625
\n" ); document.write( "-75X = -1500
\n" ); document.write( "X = 20,
\n" ); document.write( "so 20 dimes, 60 nickels and 5 quarters
\n" ); document.write( "To check 20 x 10 = 200
\n" ); document.write( "60 x 5 = 300
\n" ); document.write( "5 x 25 = 125
\n" ); document.write( "total = 625 or $6.25
\n" ); document.write( "
\n" );