The united states government used to make coins of many values. for each coin, state it’s worth as a percentage of $1

Let $1 = 100%

Let us start from the smallest and then go to the largest:

Penny: A penny is worth $0.01 (as you need 100 pennies to make a dollar).

Move the decimal point to the right two place values and add a percentage sign:

0.01 = 1%

Nickel: A nickel is worth $0.05 (as you need 20 nickels to make a dollar).

Move the decimal point to the right two place values and add a percentage sign:

0.05 = 5%

Dime: A dime is worth $0.10 (as you need 10 dimes to make a dollar).

Move the decimal point to the right two place values and add a percentage sign:

0.10 = 10%

Quarter: A quarter is worth $0.25 (as you need 4 quarters to make a dollar).

Move the decimal point to the right two place values and add a percentage sign:

0.25 = 25%

Half-Dollar: A half-dollar is worth $0.50 (as you need 2 to make a dollar).

Move the decimal point to the right two place values and add a percentage sign:

0.50 = 50%

Dollar coin: A dollar coin is worth $1.00 (you only need 1 to make a dollar).

1.00 = 100%

10 dollar coin: A 10 dollar coin is worth $10.00

10.00 = 1000%

20 dollar coin: A 20 dollar coin is worth $20.00

20.00 = 2000%

50 dollar coin: A 50 dollar coin is worth $50.00

50.00 = 5000%

~

a = 11 : 4

b = 38

c = 1 for every 6