The total number of people in the city surveyed by Annette= 480 people.
Explanation:
Let 'X' be the Total Number of people Annette surveyed.
Out of Total people in the city, only 180 people are not interested in a new shopping mall.
Therefore, it is given in the question that 180 is 37.5% of Total number of people surveyed (X).
step 1: 180= (37.5/100)*(X)
step 2: X= (180*100)/37.5
step 3: X= 18000/37.5
step 4: X= 480