document.write( "Question 98808: Richard has 22 coins with a total value of $4. If the coins are all quarters and dimes, how many of each type of coin does he have? \n" ); document.write( "
Algebra.Com's Answer #71881 by ankor@dixie-net.com(22740)\"\" \"About 
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Richard has 22 coins
\n" ); document.write( "d + q = 22
\n" ); document.write( "d = (22 - q)
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\n" ); document.write( "with a total value of $4.
\n" ); document.write( ".10d + .25q = 4
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\n" ); document.write( "If the coins are all quarters and dimes, how many of each type of coin does he have?
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\n" ); document.write( "Substitute (22-q) for d in the above equation:
\n" ); document.write( ".10(22-q) + .25q = 4
\n" ); document.write( "2.2 - .10a + .25q = 4
\n" ); document.write( "-.10q + .25q = 4 - 2.2
\n" ); document.write( ".15q = 1.8
\n" ); document.write( "q = 1.8/.15
\n" ); document.write( "q = 12 quarters
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\n" ); document.write( "That would give us: 22 - 12 = 10 dimes
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\n" ); document.write( "Check solutions
\n" ); document.write( ".10(10) + .25(12) =
\n" ); document.write( "1.00 + 3.00 = 4.00 \n" ); document.write( "
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