How much does an Okapi weigh? How much does a llama weigh?

Question

The combined average weight of an okapi and a llama is 450 kilograms. The average weight of 3 llamas is 190 kilograms more than the average weight of one okapi. On average, how much does an okapi weigh, and how much does a llama weigh?

Answer 1

(O + L) / 2 = 450

O + L = 900

O = 900 - L

3L = O + 190

3L = 900 - L + 190

3L = 1090

Can you solve for L and answer?