Aman that is 6 feet tall weighs 165 pounds use the information to predict the weight of a man that is 5 1/2 feet tall

This man would be an approximate 154 pounds. 
My math: 
6 divided into 165 gives me the unit rate. (27.5)
unit rate (27.5) x the height (5.6) = 154 
I got the 5.6 because 12 inches in a foot 5 n' 1/2 feet is 5.6

Thats where they was ported and the fields that noone really knew much about needed tended, so they put slaves out there do free work and huge profits and so on the north decided to hold its own and was more different way of survival did not have same climate conditions to afford protecting slaves from winter so expenses be diff from south