Final answer:
The worth of each coin as a percentage of $1 is: 12 cents = 12%, 3 cents = 3%, 20 cents = 20%, $2 = 200%, and $5 = 500%.
Step-by-step explanation:
To state the worth of each coin as a percentage of $1:
a. 12 cent = 12/100 = 0.12 (12%)
b. 3 cents = 3/100 = 0.03 (3%)
c. 20 cents = 20/100 = 0.20 (20%)
d. $2 = 2/1 = 2 (200%)
e. $5 = 5/1 = 5 (500%)