Three friends share a large pizza. Maria eats 14 of the pizza, and Ahmed eats 38 of the pizza. How much is left for the third person? Express your answer in simplest form.

The total amount that Maria and Ahmed ate is 14 + 38 = <<14+38=52>>52.

So, there are 100 - 52 = <<100-52=48>>48 of the large pizza left for the third person. Answer: \boxed{48}.