Final answer:
The total monthly activity-based cost for Draper Bank is $56.
Step-by-step explanation:
The total monthly activity-based cost for Draper Bank can be calculated by multiplying the activity rates with the respective number of transactions in each activity pool. For teller transaction processing, the cost would be $3.50 multiplied by 12 teller transactions, which equals $42. For check processing, the cost would be $0.12 multiplied by 100 canceled checks, resulting in $12.
Finally, for ATM transaction processing, the cost would be $0.10 multiplied by 20 ATM transactions, totaling $2. Therefore, the total monthly activity-based cost for Draper Bank is $42 + $12 + $2 = $56.