document.write( "Question 266704: okay i just don't know how to put this as an equation?
\n" ); document.write( "Rosa has $3.10 in nickles and dimes. She has 10 fewer nickels than she has dimes. How many dimes and nickels does she have?
\n" ); document.write( "

Algebra.Com's Answer #195934 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Rosa has $3.10 in nickles and dimes. She has 10 fewer nickels than she has dimes. How many dimes and nickels does she have?
\n" ); document.write( "----
\n" ); document.write( "Quantity Equation: n = d-10
\n" ); document.write( "Value Equation: 10d + 5n = 310 cents
\n" ); document.write( "----------------------------------------------
\n" ); document.write( "Rearrange and modify the equations:
\n" ); document.write( "10d - 10n = 100
\n" ); document.write( "10d + 5n = 310
\n" ); document.write( "-------------------------
\n" ); document.write( "Subtract 1st from 2nd and solve for \"n\":
\n" ); document.write( "15n = 210
\n" ); document.write( "n = 14 (# of nickels)
\n" ); document.write( "---
\n" ); document.write( "Since n = d-10, d = 24 (# of dimes)
\n" ); document.write( "========================================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "========================================
\n" ); document.write( "
\n" );