Answer:
Supervising activity rate= $7.5 per batch
Explanation:
<u>First, we need to allocate costs to Supervising:</u>
Supervising= 73,000*0.1 + 1,000*0.2= $7,500
<u>To calculate the activity rate, we need to use the following formula:</u>
Predetermined manufacturing overhead rate= total estimated overhead costs for the period/ total amount of allocation base
Supervising activity rate= 7,500 / 1,000
Supervising activity rate= $7.5 per batch