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Carcass

Verbal Expert

Joined: 18 Apr 2015

Posts: 18319

GRE 1: Q160 V160

Airline B ‘s average rating for convenience was approximatel [#permalink]

24 Jan 2017, 07:37

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Question Stats:

75% (10:32) correct

24% (00:53) wrong

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This question is a part of PowerPrep Question Collection

In a survey, 100 travel agents each ranked Airlines A, B, and C in order of preference. Each of the 100 travel agents also rated the three airlines in five categories on a scale of 1 through 10, with 10 being the best rating.

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GRE - powerprep In a survey, 100 travel agents each ranked Airlines A, B, and C in order of preference..jpg [ 51.87 KiB | Viewed 22220 times ]

Airline B ‘s average rating for convenience was approximately what percent greater than Airline A ‘s average rating for convenience?

A) 30%

B) 36%

C) 40%

D) 57%

E) 64%

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sandy

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Joined: 07 Jun 2014

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GRE 1: Q167 V156

WE:Business Development (Energy and Utilities)

Re: Airline B ‘s average rating for convenience was approximatel [#permalink]

28 Jan 2017, 04:59

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Explanation

Find Airline B's rating for convenience (8.0) and Airline A's rating for convenience (5.1).

Category	A	B	C
Convenience	5.1	8.0	4.3
Friendliness	5.0	5.5	5.4
Price	5.0	6.4	3.5
Promptness	6.5	6.9	4.1
Reliability	7.8	7.5	4.9
Total:	29.4	34.3	22.2

Determine the increase: 8.0 – 5.1 = 2.9
Now we find the percent change and round to the nearest whole number: Percent change = increase ÷ original number × 100 → 2.9 ÷ 5.1 × 100 = 56.86% or 57%.

Hence option D is correct.
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boxing506

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Joined: 26 Jun 2017

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Re: Airline B ‘s average rating for convenience was approximatel [#permalink]

01 Apr 2018, 22:44

WHy we determine Airline A as the original number?
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Carcass

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Joined: 18 Apr 2015

Posts: 18319

GRE 1: Q160 V160

Re: Airline B ‘s average rating for convenience was approximatel [#permalink]

01 Apr 2018, 23:03

Expert Reply

Because you cannot subtract 5.1 - 8.0 that is a negative number. You subtract A from B: B - A = 8 - 5.1. And A is 5.1.

Hope this helps
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Eidolons03

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Joined: 23 Nov 2017

Posts: 45

Re: Airline B ‘s average rating for convenience was approximatel [#permalink]

02 Apr 2018, 16:04

Carcass wrote:

This question is a part of PowerPrep Question Collection

Airline B ‘s average rating for convenience was approximately what percent greater than Airline A ‘s average rating for convenience?

A) 30%

B) 36%

C) 40%

D) 57%

E) 64%

Company B's average was 8.0
Company A's average was 5.1

8.0/5.1 = 1.57

1.57 is the fractional form of 157% so 8.0 is 157% of 5.1. 8.0 hence is 57% greater than 5.1

Answer D

Farina

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Joined: 10 Feb 2020

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Re: Airline B ‘s average rating for convenience was approximatel [#permalink]

17 Aug 2020, 19:00

boxing506 wrote:

WHy we determine Airline A as the original number?

Anything written after "than" would be considered as denominator
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Re: Airline B ‘s average rating for convenience was approximatel [#permalink]

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