Short Answer 
The weight of the parakeet is 7 ounces, while Jill’s fish, which weighs 8 times that of the parakeet, is 56 ounces. The total weight of both is 63 ounces.
Step 1: Define the Weight of the Parakeet
Let x represent the weight of the parakeet in ounces. According to the problem, the weight of Jill’s fish is 8 times the weight of her parakeet. Therefore, we can express the fish’s weight as 8x.
Step 2: Set Up the Total Weight Equation
The total weight of both the fish and the parakeet is given as 63 ounces. To find their individual weights, we set up the equation based on their weights: x + 8x = 63. Solving this equation involves combining like terms and simplifying:
- Combine: 9x = 63
- Divide by 9: x = 7
This indicates that the weight of the parakeet is 7 ounces.
Step 3: Calculate the Weight of the Fish
Now that we have the weight of the parakeet, we can find the weight of Jill’s fish. Using the expression for the fish’s weight:
- Substitution: 8x = 8 * 7
- Calculate: 8 * 7 = 56
As a result, the weight of Jill’s fish is 56 ounces and the weight of the parakeet is 7 ounces.