$3.00-

12 quarters
30 dimes
 300 pennies
 60 nickels
6 half dollars

$5.50-
50 dimes, 1 half dollar
500 pennies, 2 quarters
2 dollar coins, 5 half dollar coins, 4 quarters
100 nickels 2 quarters.

$3.75-

30 dimes, 3 quarters
300 pennies, 7dimes, 1 nickel
60 nickels, 75 pennies,
12 quarters, 15 nickels

$6.00-
24 quarters
600 pennies
60 dimes
120 nickels