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Seats for Statistics, Business studies, and human resources in a B-sch

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Seats for Statistics, Business studies, and human resources in a B-sch [#permalink] New post   28 Nov 2019, 22:03
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57% (02:07) correct 43% (02:19) wrong based on 46 sessions
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Seats for Statistics, Business studies, and human resources in a B-school are in the ratio 5 :7 :8. There is a proposal to increase the seats by 40%, 50%, and 75% respectively. what will be the ratio of the increased seats?
A. 2:3:4
B. 3:4:5
C. 6:7:8
D. 6:8:9
E. None of the above

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A
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Re: Seats for Statistics, Business studies, and human resources in a B-sch [#permalink] New post   01 Dec 2019, 02:20
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Present ratio
S:BS:HR
5:7:8
10:14:16
% increase
14:21:28
2:3:4
IMO A


gmatbusters wrote:
Seats for Statistics, Business studies, and human resources in a B-school are in the ratio 5 :7 :8. There is a proposal to increase the seats by 40%, 50%, and 75% respectively. what will be the ratio of the increased seats?
A. 2:3:4
B. 3:4:5
C. 6:7:8
D. 6:8:9
E. None of the above

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Re: Seats for Statistics, Business studies, and human resources in a B-sch [#permalink] New post   01 Dec 2019, 02:35
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gmatbusters wrote:
Seats for Statistics, Business studies, and human resources in a B-school are in the ratio 5 :7 :8. There is a proposal to increase the seats by 40%, 50%, and 75% respectively. what will be the ratio of the increased seats?
A. 2:3:4
B. 3:4:5
C. 6:7:8
D. 6:8:9
E. None of the above

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Let no if seats in Statistics, Business studies, and human resources be 50, 70, 80 respectively.
increasing the seats by given percentages
New no of seats for Statistics, Business studies, and human resources are 70, 105, 140
new ratio is 2:3:4

A is correct
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Re: Seats for Statistics, Business studies, and human resources in a B-sch [#permalink] New post   01 Dec 2019, 04:24
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If the seats are increased by a particular percent, the results should be integer.
—> 5:7:8–> 7:10.5:14 (no)
—> 10:14:16 —> 14: 21: 28 (yes) —> 2:3:4

The answer is A

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Re: Seats for Statistics, Business studies, and human resources in a B-sch [#permalink]
01 Dec 2019, 04:24
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