document.write( "Question 44053: Jill has $3.50 in nickels and dimes. If she has 50 coins, how many of each type of coin does she have? \n" ); document.write( "
Algebra.Com's Answer #29035 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Let N be the number of nickels and D be dimes, so that \n" ); document.write( "N + D = 50 \n" ); document.write( "Their values are 5N and 10D respectively, so that \n" ); document.write( "5N + 10D = 350 \n" ); document.write( "Now let's multiply the first equation by 5 and subtract it from the second...we get \n" ); document.write( "5N + 10D = 350 \n" ); document.write( "-(5N + 5D = 250) \n" ); document.write( "so we have \n" ); document.write( "5D = 100 \n" ); document.write( "D = 20 \n" ); document.write( "N = 30 \n" ); document.write( " |