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At the beginning of the session, a class of MBA (Finance) and a class

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At the beginning of the session, a class of MBA (Finance) and a class  [#permalink]

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New post 16 Oct 2018, 23:24
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Difficulty:

  35% (medium)

Question Stats:

77% (01:29) correct 23% (01:38) wrong based on 52 sessions

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At the beginning of the session, a class of MBA (Finance) and a class of MBA (Marketing) of a college each had n candidates. At the end of the session, 6 candidates left MBA (Finance) course and 4 candidates left MBA (Marketing) course. How many candidates did MBA (Finance) course have at the beginning of the session?


(1) The ratio of the total number of candidates who left at the end of the session to the total number of candidates at the beginning of the session was 1:5.

(2) At the end of the session, 21 candidates remained on MBA (Marketing) course.

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Re: At the beginning of the session, a class of MBA (Finance) and a class  [#permalink]

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New post 20 Oct 2018, 07:32
Total class of MBA (Finance) = n
Total class of MBA (Marketing)=n

6 candidates left MBA (Finance) = n-6
4 candidates left MBA (Marketing)=n-4


How many candidates did MBA (Finance) course have at the beginning of the session?
(1) The ratio of the total number of candidates who left at the end of the session to the total number of candidates at the beginning of the session was 1:5.

If the ratio is 1:5 then if 10 people left the total number of students are 50

Total number of candidates = n+n = 50
n=25 = number of candidates at the beginning


(2) At the end of the session, 21 candidates remained on MBA (Marketing) course.

4 candidates left MBA (Marketing)=n-4

n-4 = 21
n=25

A and B are both sufficient
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Re: At the beginning of the session, a class of MBA (Finance) and a class   [#permalink] 20 Oct 2018, 07:32
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