What is the answer to this question and how can I solve this problem

Question

How many apartment buildings are needed to house 4500 people if each building can house 180 pounds?

Answer 1

each building houses 180 pounds? that's about 1 person per building, so 4500 buildings

but you probably meant each building houses 180 people, so buildings needed = 4500/180 = 450/18 = 50/2 = 25 buildings