Question

Of the 25 fish in a tropical fish tank, 10 are guppies, 4 are swordtails, and the rest are tetras. One fish is to be randomly selected from the fish tank. What is the probability that the fish selected will not be a guppy?

Answer 1

There are 10 guppies, so we do 25-10
Which equals to 15
Answer is 3/5