ANSWER
45%
Step-by-step explanation
Rafael caught 22 trout and 18 catfish.
First, we have to calculate the total number of fish that he caught:
22 + 18 = 40 fish
Now, to find the percent of fish that were catfish, we have to divide the total number of catfish by the total number of fish and multipy by 100.
That is:
45% of the fish were catfish.