You have 100 coins that equal 5.00 not using nickels what coins do you have?
With pennies, dimes, and quarters only, this is not possible.If you could have fractions of coins or negative coins, here are some equations which together represent all solutions:P=5tD=-8t+400/3Q=3t-100/3Where P, D, and Q are the numbers of pennies, dimes, and quarters respectively, and t is any number.HOWEVER: If fifty-cent pieces are allowed, you may have:60 pennies, 39 dimes, 0 quarters, and 1 fifty-cent piece65 pennies, 31 dimes, 3 quarters, and 1 fifty-cent piece70 pennies, 23 dimes, 6 quarters, and 1 fifty-cent piece75 pennies, 15 dimes, 9 quarters, and 1 fifty-cent piece80 pennies, 7 dimes, 12 quarters, and 1 fifty-cent piece75 pennies, 20 dimes, 1 quarter, and 4 fifty-cent pieces80 pennies, 12 dimes, 4 quarters, and 4 fifty-cent pieces85 pennies, 4 dimes, 7 quarters, and 4 fifty-cent pieces90 pennies, 1 dime, 2 quarters, and 7 fifty-cent piecesAnd for a riddle you could say Half Dime (A Coin From the 1700's and 1800's.)