Cake marble

Do you want to learn how to make a marble cake?
ingredients:

• 4 cups of flour
  -1 1/2 cup sugar
• 3/4 cup margarine
• 1 cup of milk
• 2 tablespoons baking powder.
• 5 eggs
  for marble:
• 2 tablespoons milk
• 2 tablespoons vanilla
• 3 tablespoons flour
• 3 tablespoons cocoa
  preparation:
  first mix sugar and flour until there is a homogeneous mixture and incorporate the eggs one by one and beat, then mix the flour with the powders and finally mix with milk, and having the homogeneous mixture separate it in two in a mixture we will add the flour and the vanilla and in the other the cocoa and milk are added and beat and this add it in a mold at 180 ° C for 45-60 min