It is currently 23 Feb 2018, 20:08

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# According to the figure above, travelling directly from point A to poi

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 43892
According to the figure above, travelling directly from point A to poi [#permalink]

### Show Tags

24 Aug 2017, 01:05
00:00

Difficulty:

45% (medium)

Question Stats:

72% (01:05) correct 28% (01:15) wrong based on 65 sessions

### HideShow timer Statistics

According to the figure above, travelling directly from point A to point B, rather than from point A to point C to point B, would save approximately how many miles?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

[Reveal] Spoiler:
Attachment:

2017-08-24_1251.png [ 7.17 KiB | Viewed 673 times ]
[Reveal] Spoiler: OA

_________________
Intern
Joined: 24 Jun 2013
Posts: 29
Re: According to the figure above, travelling directly from point A to poi [#permalink]

### Show Tags

24 Aug 2017, 01:38
10^2+8^2=(AC)^2
AC=sqrt(164) which is little less than 13
total miles saved =(AB+BC)-AC=18 - (little <13)=5.sumthing ~5
IMO E
Director
Joined: 18 Aug 2016
Posts: 628
Concentration: Strategy, Technology
GMAT 1: 630 Q47 V29
GMAT 2: 740 Q51 V38
According to the figure above, travelling directly from point A to poi [#permalink]

### Show Tags

24 Aug 2017, 01:38
Bunuel wrote:

According to the figure above, travelling directly from point A to point B, rather than from point A to point C to point B, would save approximately how many miles?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

[Reveal] Spoiler:
Attachment:
2017-08-24_1251.png

$$AB = \sqrt{BC^2 + AC^2} = \sqrt{164} = ~13$$ (approx)

Approximate miles saved = 10+8-13 = 5

E
_________________

We must try to achieve the best within us

Thanks
Luckisnoexcuse

Last edited by Luckisnoexcuse on 07 Sep 2017, 21:25, edited 3 times in total.
Senior Manager
Joined: 02 Jul 2017
Posts: 288
GMAT 1: 730 Q50 V38
Re: According to the figure above, travelling directly from point A to poi [#permalink]

### Show Tags

24 Aug 2017, 01:39
Given diagram is a right triangle. So side AB^2= 8^2+10^2 = 164

So side AB = root 164 => 12 < root 164 < 13

So if someone travel AB instead of AC+ AB distance saved = 8+10 -AB =18- root 164

Approx = 18-13 = 5

Intern
Joined: 13 Jul 2015
Posts: 21
Re: According to the figure above, travelling directly from point A to poi [#permalink]

### Show Tags

24 Aug 2017, 01:49
Ans - E

AC^2= 10^2+8^2=164
AC=sqrt(164) <13
Total miles through B = AB+BC = 18
difference = 18-13 = approx 5
IMO E
Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 2192
Location: United States (CA)
Re: According to the figure above, travelling directly from point A to poi [#permalink]

### Show Tags

29 Aug 2017, 15:24
Bunuel wrote:

According to the figure above, travelling directly from point A to point B, rather than from point A to point C to point B, would save approximately how many miles?

(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

We see that triangle ABC is a right triangle. We can use the Pythagorean theorem to determine side AB, which we will denote as x:

10^2 + 8^2 = x^2

100 + 64 = x^2

164 = x^2

√164 = √x^2

√164 = x

Since √169 = 13, we can say x is approximately 13. The longer route is 18 miles, so the distance saved is about 18 - 13 = 5 miles.

_________________

Scott Woodbury-Stewart
Founder and CEO

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Intern
Joined: 05 Oct 2014
Posts: 23
Concentration: Finance, Entrepreneurship
Re: According to the figure above, travelling directly from point A to poi [#permalink]

### Show Tags

07 Sep 2017, 21:18
1
KUDOS
The correct answer is Option E.

Bunuel : please change the OA after review.
Math Expert
Joined: 02 Sep 2009
Posts: 43892
Re: According to the figure above, travelling directly from point A to poi [#permalink]

### Show Tags

07 Sep 2017, 21:22
chipsy wrote:
The correct answer is Option E.

Bunuel : please change the OA after review.

_______________
Edited. Thank you.
_________________
Re: According to the figure above, travelling directly from point A to poi   [#permalink] 07 Sep 2017, 21:22
Display posts from previous: Sort by