Of the 230 single-family homes built in City X last year, how many were occupied at the end of the year?
(1)Of all single-family homes in City X, 90 percent were occupied at the end of last year
(2)A total of 7,200 single-family homes in City X were occupied at the end of last year
IMO E, The question is looking for the no. of houses occupied which has been built last year.
1. It just mentions that 90 % has been occupied out of the total but we don't know how many were occupied which were last yr.
2. It just mentions the total no. of houses. so insuff.
we combine 1 and 2, we know that 720 houses are unoccupied but we don't know out of 720 houses how many have been built in last year. hence insuff.
OA pls .. !