At a carnival, the probability that you chose a winning rubber duck from 25 ducks is 0.20. How many are not winning ducks?

The game is formed such that a duck is either winning duck or a non winning duck .

there is no other result for any duck present in the game .

Also choosing a duck is a fair game it is independent of any prior situation .

here we would be using a basic probability formula , that is

Probability of a result = number of items in favour of that result divide by total number of items present in the game .

Total buy (without taxes) = 30 + 35 = 65 $  

Taxes = 6%(35) = 2.1 $  

Total Buy with Taxes = 65 +2.1 = 67.1 $  

A: 67 dollars and 10 cents