The given recipe for 1 dozen biscuits is
• 2 cups of flour.
,
• 1 cup of shortening.
,
• 1 cup of milk.
Now, we have to multiply each number by 3 in order to triple the recipe. So, the recipe for 3 dozens is
• 6 cups of flour.
,
• 3 cups of shortening.
,
• 3 cups of milk.
Hence, the total number of biscuits obtained from the new recipe is 36, which is equivalent to 3 dozens.