document.write( "Question 674058: a collection of coins has a value of $4.90, there are 20 more nickels than dimes. how many nickels and dimes are there?
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #419003 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! a collection of coins has a value of $4.90, there are 20 more nickels than dimes. how many nickels and dimes are there? \n" ); document.write( "-------- \n" ); document.write( "Equations: \n" ); document.write( "Quantity: n = d + 20 coins \n" ); document.write( "Value::: 5n + 10d = 490 cents \n" ); document.write( "-------------------------------- \n" ); document.write( "Substiute for \"n\" and solve for \"d\": \n" ); document.write( "5(d+20) + 10d = 490 \n" ); document.write( "5d + 100 + 10d = 490 \n" ); document.write( "15d = 390 \n" ); document.write( "d = 26 (# of dimes) \n" ); document.write( "----- \n" ); document.write( "Solve for \"n\" using n = d+20 \n" ); document.write( "n = 26+20 \n" ); document.write( "n = 46 (# of nickels) \n" ); document.write( "========== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |