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A Hawk can glide for 4 consecutive hours without resting using thermal 14 Jul 2016, 01:43
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A
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75% (hard)

Question Stats:

36% (02:21) correct 64% (02:29) wrong based on 14 sessions

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A Hawk can glide for 4 consecutive hours without resting using thermals only. An eagle can glide 14.5% longer without resting using the same thermals. If an eagle makes 3 stops during a certain glide, each stop after gliding its maximum possible time, how many hours long was the glide not including the resting time?

A. 18.32.
B. 16.
C. 15.66.
D. 13.74.
E. 9.16.



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A
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A Hawk can glide for 4 consecutive hours without resting using thermal 14 Jul 2016, 01:53
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Bunuel
A Hawk can glide for 4 consecutive hours without resting using thermals only. An eagle can glide 14.5% longer without resting using the same thermals. If an eagle makes 3 stops during a certain glide, each stop after gliding its maximum possible time, how many hours long was the glide not including the resting time?

A. 18.32.
B. 16.
C. 15.66.
D. 13.74.
E. 9.16.
Show more


Ans:D

3*(114.5/100)*4 = 13.74hrs
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A Hawk can glide for 4 consecutive hours without resting using thermal 14 Jul 2016, 02:28
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hawk can do 4 consecutive hours
while
an eagle can do 4+0.58
total = 3*(4.58)=13.74
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A Hawk can glide for 4 consecutive hours without resting using thermal 16 Jul 2016, 14:50
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CounterSniper
hawk can do 4 consecutive hours
while
an eagle can do 4+0.58
total = 3*(4.58)=13.74
Show more


Everyone seems to be assuming that there were three periods of gliding; I assumed four. I read the question to mean how long can an eagle glide with only three rest stops? In which case the answer is A.

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A Hawk can glide for 4 consecutive hours without resting using thermal 21 Jul 2016, 10:08
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Chakolate
CounterSniper
hawk can do 4 consecutive hours
while
an eagle can do 4+0.58
total = 3*(4.58)=13.74


Everyone seems to be assuming that there were three periods of gliding; I assumed four. I read the question to mean how long can an eagle glide with only three rest stops? In which case the answer is A.

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I agree with you.

Their gliding time for the eagle without rest is correct but they misunderstood that the eagle flies for 4.58h, rest, flies another 4.58h, rest, flies another 4.58h, rest for the last time, and continues its journey for another 4.58h. Hence, A.
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A Hawk can glide for 4 consecutive hours without resting using thermal 21 Jul 2016, 22:21
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Bunuel
A Hawk can glide for 4 consecutive hours without resting using thermals only. An eagle can glide 14.5% longer without resting using the same thermals. If an eagle makes 3 stops during a certain glide, each stop after gliding its maximum possible time, how many hours long was the glide not including the resting time?

A. 18.32.
B. 16.
C. 15.66.
D. 13.74.
E. 9.16.
Show more

Glide time for Hawk = 4 hours.
Glide time for eagle = 1.145*4 = 4.58 hours

----|----|----|----

Total flight time = 4.58*4 = 18.32 hours.

Correct Option: A
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A Hawk can glide for 4 consecutive hours without resting using thermal 22 Jul 2016, 00:55
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OptimusPrepJanielle
Bunuel
A Hawk can glide for 4 consecutive hours without resting using thermals only. An eagle can glide 14.5% longer without resting using the same thermals. If an eagle makes 3 stops during a certain glide, each stop after gliding its maximum possible time, how many hours long was the glide not including the resting time?

A. 18.32.
B. 16.
C. 15.66.
D. 13.74.
E. 9.16.

Glide time for Hawk = 4 hours.
Glide time for eagle = 1.145*4 = 4.58 hours

----|----|----|----

Total flight time = 4.58*4 = 18.32 hours.

Correct Option: A
Show more

Its written that eagle can make 3 stops, each stop after gliding its max distance .

Thus ... for eagle

Glide stop1 glide stop2 glide stop3. If eagle glide for 4th time then there must be an stop4, which cannot happen as per statement above.

I think question language is bit Ambiguous ..

Please correct me ...if i am missing something here

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A Hawk can glide for 4 consecutive hours without resting using thermal 22 Jul 2016, 01:19
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First we need to realise that the eagle took 3 stops. So it gets divided into 4 sections.

Now eagle can fly 14.5% longer so 4*1.145=4.58 hours

Now Since eagle took 3 stops so 4.58*4=18.32 hours Hence the answer is A
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A Hawk can glide for 4 consecutive hours without resting using thermal 22 Jul 2016, 10:44
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Nick90
OptimusPrepJanielle
Bunuel
A Hawk can glide for 4 consecutive hours without resting using thermals only. An eagle can glide 14.5% longer without resting using the same thermals. If an eagle makes 3 stops during a certain glide, each stop after gliding its maximum possible time, how many hours long was the glide not including the resting time?

A. 18.32.
B. 16.
C. 15.66.
D. 13.74.
E. 9.16.

Glide time for Hawk = 4 hours.
Glide time for eagle = 1.145*4 = 4.58 hours

----|----|----|----

Total flight time = 4.58*4 = 18.32 hours.

Correct Option: A

Its written that eagle can make 3 stops, each stop after gliding its max distance .

Thus ... for eagle

Glide stop1 glide stop2 glide stop3. If eagle glide for 4th time then there must be an stop4, which cannot happen as per statement above.

I think question language is bit Ambiguous ..

Please correct me ...if i am missing something here

Sent from my Le X507 using GMAT Club Forum mobile app
Show more

I completely agree with Nick-answer has to be D-Bunuel-please clarify



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
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