Well 75 cents is like three quarters, two quarters, two dimes, and a nickel, 75 pennies. ^^
A quarter = 25 cents
A dime = 10 cents
A nickel = 5 cents
A penny = 1 cent
So if two quarters are together...that is fifty cents. 25 + 25 = 50. And so 25 + 25 + 10 + 10 + 5 = 75.
I hope I didn't confuse you. ^^