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by man.undefeated
Fri Sep 09, 2011 4:18 am
 
Forum: Manhattan Prep GMAT CAT Math
Topic: Is there an easier way to solve this problem?
Replies: 26
Views: 8844
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Re: Is there an easier way to solve this problem?

Hi, I followed the following approach and got the right ans. not sure whether i will end up with the correct ans every time using this approach. 1st of all, I assumed all the students took one course each. so the number of students becomes= 84 but the given number of students=68 (84-68)=16, these ar...