GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 22 Jan 2019, 23:19

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • The winners of the GMAT game show

     January 22, 2019

     January 22, 2019

     10:00 PM PST

     11:00 PM PST

    In case you didn’t notice, we recently held the 1st ever GMAT game show and it was awesome! See who won a full GMAT course, and register to the next one.
  • Key Strategies to Master GMAT SC

     January 26, 2019

     January 26, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.

A cyclist climbs a hill with a length of 400 m with a speed of

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Manager
Manager
User avatar
P
Joined: 16 Oct 2016
Posts: 194
Location: India
Concentration: General Management, Healthcare
GMAT 1: 640 Q40 V38
GMAT 2: 680 Q48 V35
GPA: 3.05
WE: Pharmaceuticals (Health Care)
Premium Member Reviews Badge CAT Tests
A cyclist climbs a hill with a length of 400 m with a speed of  [#permalink]

Show Tags

New post 26 Dec 2018, 19:16
1
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

61% (02:01) correct 39% (02:15) wrong based on 33 sessions

HideShow timer Statistics

A cyclist climbs a hill with a length of 400 m with a speed of 7.2 km/h. When descending, the speed is two times greater. How much time is necessary for the cyclist to climb and descend the hill?

A. 100 Seconds

B. 200 Seconds

C. 300 Seconds

D. 400 Seconds

E. 500 Seconds

_________________

_____________________
Chasing the dragon

GMAT Tutor
User avatar
G
Status: Tutor - BrushMyQuant
Joined: 05 Apr 2011
Posts: 622
Location: India
Concentration: Finance, Marketing
Schools: XLRI (A)
GMAT 1: 700 Q51 V31
GPA: 3
WE: Information Technology (Computer Software)
Re: A cyclist climbs a hill with a length of 400 m with a speed of  [#permalink]

Show Tags

New post 27 Dec 2018, 03:23
Top Contributor
If the Question is Speed (coming down) = Two Times of Speed (going up)
While going up the time taken is d/s (Distance/speed)
while coming down time taken is d/2s (Speed is 2 times => 2 times of the speed while going up)

Total time = d/s + d/(2s) = 3d/(2s)

d= 400m = 0.4km
s = 7.2 km/hr

time = 3d/(2s) = 3*0.4 / (2*7.2) hr = 12/(2*72) hr = 1*3600/12 sec = 300s

So, Answer is C

If the Question is Speed (coming down) = Two Times greater than Speed (going up)
While going up the time taken is d/s (Distance/speed)
while coming down time taken is d/3s (Speed is 2 times greater => 3 times of the speed while going up)

Total time = d/s + d/(3s) = 4d/(3s)

d= 400m = 0.4km
s = 7.2 km/hr

time = 4d/(3s) = 4*0.4 / (3*7.2) hr = 16/(3*72) hr = 16*3600/(3*72) sec = 16*50/3 sec = 800/3 sec = 267 sec
So, either the questions needs to be updated or 267 has to be added as an option choice!

Hope it helps!
fitzpratik wrote:
A cyclist climbs a hill with a length of 400 m with a speed of 7.2 km/h. When descending, the speed is two times greater. How much time is necessary for the cyclist to climb and descend the hill?

A. 100 Seconds

B. 200 Seconds

C. 300 Seconds

D. 400 Seconds

E. 500 Seconds

_________________

Ankit

Check my Tutoring Site -> Brush My Quant

GMAT Quant Tutor
How to start GMAT preparations?
How to Improve Quant Score?
Gmatclub Topic Tags
Check out my GMAT debrief

How to Solve :
Statistics || Reflection of a line || Remainder Problems || Inequalities

GMAT Club Bot
Re: A cyclist climbs a hill with a length of 400 m with a speed of &nbs [#permalink] 27 Dec 2018, 03:23
Display posts from previous: Sort by

A cyclist climbs a hill with a length of 400 m with a speed of

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.