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All students in a certain law school are in either first, second, or t

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All students in a certain law school are in either first, second, or t  [#permalink]

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New post 24 Dec 2018, 22:07
1
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A
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E

Difficulty:

  25% (medium)

Question Stats:

81% (02:22) correct 19% (02:34) wrong based on 57 sessions

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All students in a certain law school are in either first, second, or third year, and there is an equal number of students in each year. All students in the school are either full-time or part-time, and there are twice as many full-time students as part-time students. All students in first year are full-time, and there are as many part-time students in second year as there are in third year. If there are 600 total students in the law school, how many are full-time students in third year?

a. 100

b. 200

c. 300

d. 400

e. 500

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Re: All students in a certain law school are in either first, second, or t  [#permalink]

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New post 24 Dec 2018, 23:52
AkshdeepS wrote:
All students in a certain law school are in either first, second, or third year, and there is an equal number of students in each year. All students in the school are either full-time or part-time, and there are twice as many full-time students as part-time students. All students in first year are full-time, and there are as many part-time students in second year as there are in third year. If there are 600 total students in the law school, how many are full-time students in third year?

a. 100

b. 200

c. 300

d. 400

e. 500



Too much words but a very easy question if you follow it step wise..
A) Total 600
B) I=II=III, so each year = 600/3=200..
C) full time twice of part time, so full =2(part).. thus full+part=3*part=600..part=200 and full = 400..
D) I=200=full time, so we have 200 full time in II and III..
Now full in II and III are equal so 200/2=100

A
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Re: All students in a certain law school are in either first, second, or t  [#permalink]

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New post 25 Dec 2018, 09:51
AkshdeepS wrote:
All students in a certain law school are in either first, second, or third year, and there is an equal number of students in each year. All students in the school are either full-time or part-time, and there are twice as many full-time students as part-time students. All students in first year are full-time, and there are as many part-time students in second year as there are in third year. If there are 600 total students in the law school, how many are full-time students in third year?

a. 100

b. 200

c. 300

d. 400

e. 500


draw a table and input all the given info..

IMO A

table solution atttached
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Re: All students in a certain law school are in either first, second, or t &nbs [#permalink] 25 Dec 2018, 09:51
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