document.write( "Question 559613: 20 coins are in a bank. If the coins are quarters and nickels only and amount to $1.60, how many of each coins are there? \n" ); document.write( "
Algebra.Com's Answer #363476 by htmentor(1343)![]() ![]() You can put this solution on YOUR website! Let n = the number of nickels \n" ); document.write( "Then 20 - n = the number of quarters \n" ); document.write( "We can write the following equation for the amount: \n" ); document.write( "160 = 5n + 25(20-n) [in cents] \n" ); document.write( "Solve for n: \n" ); document.write( "160 = 5n + 500 - 25n \n" ); document.write( "20n = 340 \n" ); document.write( "n = 17 \n" ); document.write( "So there are 17 nickels and 3 quarters \n" ); document.write( "Check: \n" ); document.write( "3*25 + 17*5 = 75 + 85 = 160 \n" ); document.write( " |