What is the mass of phosphorus in a 41-kg person? Phosphorus mass is 0.78kg

I think the question is not about the actual mass of Phosphorus in the body because it is already given in the second statement that it is equal to 0.78 kg. I think the question must be about the mass percentage of phosphorus in the body of a 41-kg person.

Mass % = (Mass of Phosphorus/Mass of Body) * 100

Mass % = (0.78 kg/41 kg) * 100 = 1.9%