document.write( "Question 62086: Merlin has 20 coins in quarters and dimes. The total value of the coins is $3.95. How many coins of each kind does he have? \n" ); document.write( "
Algebra.Com's Answer #42896 by ankor@dixie-net.com(22740)\"\" \"About 
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Make an equation from each sentence: d = no of dimes; q = number of quarters
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\n" ); document.write( "\"Merlin has 20 coins in quarters and dimes.\"
\n" ); document.write( "d + q = 20
\n" ); document.write( "we will use this for substitution in the $ equation:
\n" ); document.write( "d = (20-q)
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\n" ); document.write( "The total value of the coins is $3.95.\"
\n" ); document.write( ".10d + .25 = 3.95
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\n" ); document.write( "Substitute (20-q) for d in the above equation and solve for q:
\n" ); document.write( ".10(20-q) + .25q = 3.95
\n" ); document.write( "2 - .10q + .25q = 3.95
\n" ); document.write( ".15q = 3.95 - 2
\n" ); document.write( ".15q = 1.95
\n" ); document.write( "q = 1.95/.15
\n" ); document.write( "q = 13 quarters
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\n" ); document.write( "I'll let you find out the number of dimes. Check the solutions in the $$equation\r
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