Final answer:
Let o represent the average weight of an okapi and l represent the average weight of a llama. Using the given information and equations, we can solve for the values of o and l. On average, an okapi weighs 280 kilograms and a llama weighs 170 kilograms.
Step-by-step explanation:
Let's start by assigning variables to the unknowns: let o represent the average weight of an okapi and l represent the average weight of a llama.
From the given information, we can set up two equations:
- l + o = 450 (since the combined average weight of an okapi and a llama is 450 kilograms)
- 3l = o + 190 (since the average weight of 3 llamas is 190 kilograms more than the average weight of one okapi)
Using these equations, we can solve for the values of o and l. By substituting the value of o in equation 2, we get 3l = 450 - l + 190. Solving this equation, we find that l = 170 kilograms. Substituting this value of l into equation 1, we can solve for o and find that o = 280 kilograms. Therefore, on average, an okapi weighs 280 kilograms and a llama weighs 170 kilograms.