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Question: A random survey of 100 students at a middle school in a city showed that 36 students have glasses or contacts. If there are 250 students at the school, how many students would be expected to have glasses or contacts? A ) 61 B ) 85 C ) 72 D ) 36 Steps to derive 1 Among 100 students 36 are having glasses or contacts. [Given.]2 If there are 200 students, 72 would be having glasses or contacts. [Since 72 = 2 × 36.]3 If there are 50 students, 18 would have glasses or contacts. [Since 18 = 36 2 .]4 So, if there are 250 students, 90 students would be expected to have glasses or contacts. [Add 72 and 18.]5 Among the choices listed, 85 is very close to 90.6 So, 85 students would be expected to have glasses or contacts in all.Hence the right answer is Option B Click Here To Go Back Few Other Questions - Which of the graphs describes the inequality y ≥ 3?.. Which of the following choices is the solution for the inequality, x - 34 < 2?.. 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