Description: Sal solves a US customary mass (weight) word problem involving pounds and tons. Created by Sal Khan and Monterey Institute for Technology and Education. A standard elevator in a mid-rise building can hold a maximum weight of 1 and 1/2 tons. Assuming an average adult weight of 160 pounds, what is the maximum number of adults who could safely ride the elevator? So what we need to do is we have to get the maximum weight that the elevator could hold in terms of pounds.*Teacher Advisor is 100% free.