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Facts: The graph refers to a plane's flight from one location to anoth

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Joined: 28 Mar 2017
Posts: 1000
Location: India
Concentration: Finance, Technology
Schools: Kellogg '21, Sloan '21, Ross '21, Stern '21, LBS '20, Rotman '21, Ivey '20
GMAT 1: 730 Q49 V41
GPA: 4
Facts: The graph refers to a plane's flight from one location to anoth [#permalink]

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New post 18 Mar 2018, 12:16
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File comment: Exam Pack 1 CAT 4 IR
GMATPrep Exam 4 IR.PNG
GMATPrep Exam 4 IR.PNG [ 95.85 KiB | Viewed 333 times ]


Please explain how to arrive at the 1 part of question's answer !!!
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Long And A Fruitful Journey - V21 to V41; If I can, So Can You!!


My study resources:
1. Useful Formulae, Concepts and Tricks-Quant
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7. GMAT Prep Challenge RC

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Location: India
GPA: 3.12
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Re: Facts: The graph refers to a plane's flight from one location to anoth [#permalink]

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New post 18 Mar 2018, 12:24
gmatexam439 wrote:
Attachment:
GMATPrep Exam 4 IR.PNG


Please explain how to arrive at the 1 part of question's answer !!!


The question asks you to find out at which time interval was the flight
closer to its destination at time - X than at time - Y. This is only possible
when the distance either remains the same or increases after the time
has passed.

If you observe the graph carefully, the only time when the graph is
moving in the opposite direction(is from t=60 to t=80)

Therefore, it is the answer that you looking for. Hope that helps!
_________________

Stay hungry, Stay foolish

2017-2018 MBA Deadlines

Class of 2020: Rotman Thread | Schulich Thread
Class of 2019: Sauder Thread

VP
VP
User avatar
D
Joined: 28 Mar 2017
Posts: 1000
Location: India
Concentration: Finance, Technology
Schools: Kellogg '21, Sloan '21, Ross '21, Stern '21, LBS '20, Rotman '21, Ivey '20
GMAT 1: 730 Q49 V41
GPA: 4
Re: Facts: The graph refers to a plane's flight from one location to anoth [#permalink]

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New post 18 Mar 2018, 12:32
pushpitkc wrote:
gmatexam439 wrote:
Attachment:
GMATPrep Exam 4 IR.PNG


Please explain how to arrive at the 1 part of question's answer !!!


The question asks you to find out at which time interval was the flight
closer to its destination at time - X than at time - Y. This is only possible
when the distance either remains the same or increases after the time
has passed.

If you observe the graph carefully, the only time when the graph is
moving in the opposite direction(is from t=60 to t=80)

Therefore, it is the answer that you looking for. Hope that helps!


Suppose I take a flight from Mumbai to Delhi.
At the starting my Distance to destination = 1000 (suppose)
At the starting my time travelled = 0

Now as time elapses my distance from destination will reduce right? So shouldn't the answer be the maximum time elapsed? Because ultimately I will be at the destination when I actually reach Delhi and that is the moment when my time lapsed will be maximum.

I didn't understand you reasoning. Can you please explain w.r.t. my example.
_________________

Kudos if my post helps!

Long And A Fruitful Journey - V21 to V41; If I can, So Can You!!


My study resources:
1. Useful Formulae, Concepts and Tricks-Quant
2. e-GMAT's ALL SC Compilation
3. LSAT RC compilation
4. Actual LSAT CR collection by Broal
5. QOTD RC (Carcass)
6. Challange OG RC
7. GMAT Prep Challenge RC

BSchool Forum Moderator
User avatar
V
Joined: 26 Feb 2016
Posts: 2436
Location: India
GPA: 3.12
Premium Member CAT Tests
Re: Facts: The graph refers to a plane's flight from one location to anoth [#permalink]

Show Tags

New post 18 Mar 2018, 13:40
gmatexam439 wrote:
pushpitkc wrote:
gmatexam439 wrote:
Attachment:
GMATPrep Exam 4 IR.PNG


Please explain how to arrive at the 1 part of question's answer !!!


The question asks you to find out at which time interval was the flight
closer to its destination at time - X than at time - Y. This is only possible
when the distance either remains the same or increases after the time
has passed.

If you observe the graph carefully, the only time when the graph is
moving in the opposite direction(is from t=60 to t=80)

Therefore, it is the answer that you looking for. Hope that helps!


Suppose I take a flight from Mumbai to Delhi.
At the starting my Distance to destination = 1000 (suppose)
At the starting my time travelled = 0

Now as time elapses my distance from destination will reduce right? So shouldn't the answer be the maximum time elapsed? Because ultimately I will be at the destination when I actually reach Delhi and that is the moment when my time lapsed will be maximum.

I didn't understand you reasoning. Can you please explain w.r.t. my example.


Here, we are asked to find the distance w.r.t the destination in that
specific timeline. For instance if I had given you two time ranges
and asked you to compare the distances for those ranges,

Option 1 : t=10 to 20 (distance traveled 100 to 75 km) - detour due to turbulence
Option 2 : t=50 to 60 (distance traveled 275 to 375 km)

Here, the plane travels closer to the destination by 100 km in Option 2
but it travels 25 km away from the destination in Option 1. So we can
say that the plane was closer to its destination at t=10 than it was at
t=20 and Option 1 is the answer!

Hope this helps!
_________________

Stay hungry, Stay foolish

2017-2018 MBA Deadlines

Class of 2020: Rotman Thread | Schulich Thread
Class of 2019: Sauder Thread

Re: Facts: The graph refers to a plane's flight from one location to anoth   [#permalink] 18 Mar 2018, 13:40
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