Assume now that you have three bowls, 3 cake pans and 3 mixers. How much faster is the process now that you have additional resources?

You are trying to bake 3 blueberry pound cakes. Cake ingredients are as follows:
1 cup butter, softened
1 cup sugar

4 large eggs
1 teaspoon vanilla extract
1/2 teaspoon salt
1/4 teaspoon nutmeg
1 1/2 cups lour
1 cup blueberries
The recipe for a single cake is as follows:
Step 1: Preheat oven to 325°F (160°C). Grease and lour your cake pan.
Step 2: In large bowl, beat together with a mixer butter and sugar at medium speed until light and fluffy. Add eggs, vanilla, salt and nutmeg.
Beat until thoroughly blended. Reduce mixer speed to low and add flour, 1/2 cup at a time, beating just until blended.
Step 3: Gently fold in blueberries. Spread evenly in prepared baking pan. Bake for 60 minutes.