Final answer:
The total amount of joint cost is $113,000.
Step-by-step explanation:
The total amount of joint cost can be calculated by adding the materials cost, labor cost, and remixing cost. In this case, the materials cost is $52,000, the labor cost is $56,000, and the remixing cost is $5,000. Therefore, the total joint cost is $52,000 + $56,000 + $5,000 = $113,000.