document.write( "Question 74955: Solve each of the following problems. Be sure to show the equations used for the solution.
\n" ); document.write( "Number problems. Jill has $3.50 in nickels and dimes. If she has 50 coins, how many of each type of coin does she have?
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Algebra.Com's Answer #53860 by ankor@dixie-net.com(22740)\"\" \"About 
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\n" ); document.write( "Write an equation for each sentence:
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\n" ); document.write( "\"Jill has $3.50 in nickels and dimes.\"
\n" ); document.write( ".05n + .10d = 3.50
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\n" ); document.write( "\"If she has 50 coins,\"
\n" ); document.write( "n + d = 50
\n" ); document.write( "n = 50 - d; use for substitution in the 1st equation
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\n" ); document.write( "how many of each type of coin does she have?
\n" ); document.write( ".05(50-d) + .10d = 3.50
\n" ); document.write( "2.5 - .05d + .10d = 3.50
\n" ); document.write( "-.05d + .10d = 3.50 - 2.5
\n" ); document.write( "+.05d = 1.00
\n" ); document.write( "d = 1/.05
\n" ); document.write( "d = 20 dimes
\n" ); document.write( ":
\n" ); document.write( "you can find the number of nickels using the equation: n + d = 50
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\n" ); document.write( "Check the solutions by substitution in: .05n + .10d = 3.50 \n" ); document.write( "
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