Answer
The answer and procedures of the exercise are attached in the following archives.
Additional questions:
1. Joint costs allocated to product A1 total
2. Joint costs allocated to product B1 total
3. The net change in operating income resulting from a decision to manufacture product A2 is
4. The net change in operating income resulting from a decision to manufacture product B2 is
Explanation
You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.