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17 Dec 2019, 01:10
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
60% (01:52) correct
40%
(01:45)
wrong
based on 264
sessions
History
Date
Time
Result
Not Attempted Yet
Of the 720 students at a certain university, 25 percent are seniors. If x seniors were to graduate early and leave the university and no additional students entered or left the university, what value of x would reduce the number of seniors at the university to 20 percent?
(A) 30
(B) 36
(C) 42
(D) 45
(E) 48
Are You Up For the Challenge: 700 Level Questions
(A) 30
(B) 36
(C) 42
(D) 45
(E) 48
Are You Up For the Challenge: 700 Level Questions
17 Dec 2019, 01:18
Kudos
Bookmarks
25% of 720= 180
20=(180-x\720-x ) 100
Solve for x you get x= 45
IMO option D is correct
20=(180-x\720-x ) 100
Solve for x you get x= 45
IMO option D is correct
firas92
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Joined: 16 Jan 2019
Last visit: 02 Dec 2024
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Location: India
Concentration: General Management
Schools: Tepper '23 (M$) Foster '23 (D)
GMAT 1: 740 Q50 V40
WE:Sales (Other)
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17 Dec 2019, 01:23
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Number of Seniors = \(\frac{720}{4} = 180\)
\(\frac{180-x}{720-x}=\frac{1}{5}\)
\(900-5x=720-x\)
\(x=45\)
Answer is (D)
\(\frac{180-x}{720-x}=\frac{1}{5}\)
\(900-5x=720-x\)
\(x=45\)
Answer is (D)
