Among a group of 2,500 people, 35 percent invest in municipal bonds, 18 percent invest in oil stocks, and 7 percent invest in both municipal bonds and oil stocks. If 1 person is to be randomly selected from the 2,500 people, what is the probability that the person selected will be one who invests in municipal bonds but NOT in oil stocks?	Choose the correct choice from the following.
A) 9/50
B) 7/25
C) 7/20
D) 21/50
E) 27/50
Among a group of 2,500 people, 35 percent invest in municipal bonds, 18 percent invest in oil stocks, and 7 percent invest in both municipal bonds and oil stocks.   As per the attached venn diagram, we have to find the number of people in shaded portion.   =35%-7%=28%   Thus, probability 35 -7= 
<gadget id="calculator">35 -7</gadget>
<output>28</output>
28%   Thus, probability= 0.28 = 7/25   (2,500 people, 18 percent invest in oil stocks is not required.)   Answer is (7/25)
<result>B</result>
Among a group of 2,500 people, 35 percent invest in municipal bonds, 18 percent invest in oil stocks, and 7 percent invest in both municipal bonds and oil stocks. If 1 person is to be randomly selected from the 2,500 people, what is the probability that the person selected will be one who invests in municipal bonds but NOT in oil stocks?