Question

A fish tank at a pet store has 3 red fish, 6 blue fish, 7 yellow fish, and 4 orange fish. If one fish is chosen at random from the tank, what is the probability that the fish will be blue or yellow?

Answer 1

(6+7)/(3+6+7+4)
13/20 = 0.65

Answer 2

There are 13 yellow or blue fish.
and the total number of fish in the fish tank is 20.

so the answer is 13/20