document.write( "Question 668759: a collection of 36 dimes and quarters is worth $4.80.how many dimes are there \n" ); document.write( "
Algebra.Com's Answer #415823 by swincher4391(1107)\"\" \"About 
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d+q = 36
\n" ); document.write( "10d + 25q = 480
\n" ); document.write( "10d + 10q = 360 (multiplying first by 10)
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\n" ); document.write( "15q = 120\r
\n" ); document.write( "\n" ); document.write( "q = 8\r
\n" ); document.write( "\n" ); document.write( "d+8 = 36\r
\n" ); document.write( "\n" ); document.write( "d = 28\r
\n" ); document.write( "\n" ); document.write( "28 dimes; 8 quarters
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