document.write( "Question 810384: Brad has a collection of dimes and quarters totaling $47.50. The number of quarters is 10 more than twice the number of dimes. How many coins of each kind does he have? \n" ); document.write( "

Algebra.Com's Answer #488090 by TimothyLamb(4379) $\"\"$ $\"About$

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10d + 25q = 4750
\n" ); document.write( "q = 2d + 10
\n" ); document.write( "---
\n" ); document.write( "10d + 25q = 4750
\n" ); document.write( "10d + 25(2d + 10) = 4750
\n" ); document.write( "10d + 50d + 250 = 4750
\n" ); document.write( "60d = 4500
\n" ); document.write( "---
\n" ); document.write( "d = 75
\n" ); document.write( "q = 2(75) + 10 = 160
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