11/23/09

Test 4 Section 3 - #20 (page 586)

Variables in the answer choices mean PLUG-IN!! Let's call n anything we want. How about 10, because that's an easy number to work with. So if there are 10 men enrolled, there must be 85 women enrolled (because the question says there are 75 more women than men). So that's 95 people at the college. Of those 95, 10 are men, so the percent of students who are men is 10/95, or about 10.53%. Now just go through each answer to see which one matches that when you use = 10. That'll be Choice (E).

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