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by baller12q » Sat Mar 28, 2009 6:43 pm
At a certain university the ratio of the number of teachingassistants to the number of students in any course must always be greater than 3:80. at this university, what is the maximum number of students possible in a course that has 5 teaching assistants?
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by cramya » Sat Mar 28, 2009 6:54 pm
Let s be the number of students.

5/s > 3/80

400/3 > s

133.33 > s

So at the max s can be 133
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by gmat740 » Sat Mar 28, 2009 8:40 pm
In the Question given:

Teacher/Student >=3/80

So when Teacher =5

5/Student >=3/80

Cross-Multiply

student <= 5*80/3

Student<=133.33

since no of teachers cann't be in fractions so we take the max value as
133
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