please help me to solve this

LLC Corporation manufactures products A, B and C. The following information is related to the products for the month of March: The factory overhead cost incurred in March is $35,000. Currently, LLC Corporation allocates the overhead costs based on its machine hours. The company intends to adopt the activity-based costing system. Following are the overhead costs and appropriate cost drivers for the month of December: All the three products were processed and produced in a production batch of 20 units. Based on the information above: (a) Calculate the total cost of each product by using the machine hours as the cost driver. (b) Calculate the total cost of each product by using activity-based costing system