Choose an appropriate costing method and work out the total cost per unit and selling price

Belrook Pets offers a variety of pet services, including grooming and washing. In the month of March, they provided two custom services for Dog A and Dog B. Dog A's treatment required 3 hours of labour; while Dog B required 2.5 hours. Belrook Pet's predetermined overhead rate is $15 per direct labour hour. The direct labour rate is $20 per hour: Additionally, Dog A required $50 worth of expensive grooming products, and Dog B required $45 worth of soap products.

1. Which costing method is the most appropriate for Belrook Pets
2. Using the method you selected in A), calculate the total cost for Dog A's grooming and Dog Bs washing. Find out the price Belrook Pets should charge for each service if the mark up Belrook Pets uses is 30%