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1. We want to find the total number of people that Annette surveyed given that we know a percentage and the number that the percentage represents.

   We will find that the number of people that Annette survey is 480.

   To get the solution:

   Let’s assume that she surveyed a total of X people.

   Then we can write the equivalence:

   100% = X

   We know that the 37.5% is equivalent to 180 people, then we can write:

   37.5% = 180

   The two equations are:

   100% = X

   37.5% = 180

   Now we can take the quotient between these two equations to get:

   (100%/37.5%) = X/180

   Solving for X we get:

   (100%/37.5%)*180 = X = 480

   So the total number of people surveyed is 480.

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2. Answer:

   480 people

   180/X × 100 = 37.5%

   180 × 100 = 37.5 × X

   18000 ÷ 37.5 = 37.5 × x ÷ 37.5

   480 people = x

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