This is a question on my algebra homework that I don't understand, can someone help me?

Question

John caught 24 trout and bass while on a fishing trip. The total weight of his catch is 137 pounds. The average weight of a trout is 2.5 pounds, and the average weight of the bass is 8 pounds. How many trout and bass was caught?

Answer 1

t represents the number of trout

24 - t represents the number of bass

2.5t + 8(24 - t) = 137

Can you solve for t and answer?

Answer 2

Writing system of equations:

t + b = 24

2.5t + 8b = 137

b = 24 - t

2.5t + 8(24 - t) = 137

2.5t +192 - 8t =137

5.5t = 55

t = 10

b = 24 - 10 = 14