document.write( "Question 1112925: A collection of dimes and nickels is worth $3.30. If there are 42 coins in all, how much of each kind of coin are there? \n" ); document.write( "
Algebra.Com's Answer #727973 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Here is a quick way to find the answer to this kind of problem with a few mental calculations. \n" ); document.write( "(1) If all 42 coins were dimes, the total would be $4.20, which is 90 cents more than the actual total. \n" ); document.write( "(2) Each dime is worth 5 cents more than each nickel; each time a dime is replaced with a nickel, the total goes down by 5 cents. \n" ); document.write( "(3) The number of nickels is 90/5 = 18. \n" ); document.write( "(4) The number of dimes is 42-18 = 24. \n" ); document.write( " |