In a recent survey, 175 high school seniors were asked about what methods they use to prevent acne including bar soap or face wash. The results are displayed in the Venn Diagram below

A. 10%
B. 20%
c. 60%
D. 30%

Question

In a recent survey, 175 high school seniors were asked about what methods they use to prevent acne including bar soap or face wash. The results are displayed in the Venn Diagram below

A. 10%
B. 20%
c. 60%
D. 30%

anonymous · Answer

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darkprince14 · Answer

Are the numbers indicated in the figure in percentage or the direct number of students?
Supposing they are in percentage form
   Note that in total, we have 100% in the set. The 40% (the number outside the circles) denotes that they do NOT use both bar soap and face wash.

  Therefore, the percentage that they DO USE bar soap OR face wash is 100%-40% = 60%

  Work wonders from there :)

darkprince14 · Answer

The whole rectangle is the 100% so the elements (or rather the numbers inside the rectangle) should sum up to 100%