GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

It is currently 21 Jan 2020, 07:12

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

The Kiljaro Highway is marked with Milestones denoting the distance to

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

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 60545
The Kiljaro Highway is marked with Milestones denoting the distance to  [#permalink]

Show Tags

New post 05 Dec 2019, 03:12
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

62% (02:50) correct 38% (02:48) wrong based on 33 sessions

HideShow timer Statistics

The Kiljaro Highway is marked with Milestones denoting the distance to the town of Kiljaro. Tommy left kiljaro and drove the highway, passing the 10 km milestone at 8:30. Some time afterwards, Tommy got a phone call asking him to return home, and he made a U-turn at the 160 km milestone. At 09:A0 Tommy passed the milestone marking 70 km to Kiljaro. The variable A represents the tens digit of the minutes in 09:A0. Assuming Tommy maintained the same constant speed during the entire drive, how many kilometers did Tommy travel in one minute?


A. \(\frac{240}{30+10A}\)

B. \(\frac{240}{30+60A}\)

C. \(\frac{240}{40A}\)

D. \(\frac{220}{30+10A}\)

E. \(\frac{220}{40A}\)


Are You Up For the Challenge: 700 Level Questions

_________________
VP
VP
User avatar
V
Joined: 19 Oct 2018
Posts: 1293
Location: India
Premium Member
Re: The Kiljaro Highway is marked with Milestones denoting the distance to  [#permalink]

Show Tags

New post 05 Dec 2019, 10:14
Distance covered by Tommy from 8:30 to 9:A0 = (160-10)+(160-70)= 240 Kms

Total time taken= 30+10A minutes

Distance travelled by Tommy in 1 minute= \(\frac{240}{30+10A}\)


Bunuel wrote:
The Kiljaro Highway is marked with Milestones denoting the distance to the town of Kiljaro. Tommy left kiljaro and drove the highway, passing the 10 km milestone at 8:30. Some time afterwards, Tommy got a phone call asking him to return home, and he made a U-turn at the 160 km milestone. At 09:A0 Tommy passed the milestone marking 70 km to Kiljaro. The variable A represents the tens digit of the minutes in 09:A0. Assuming Tommy maintained the same constant speed during the entire drive, how many kilometers did Tommy travel in one minute?


A. \(\frac{240}{30+10A}\)

B. \(\frac{240}{30+60A}\)

C. \(\frac{240}{40A}\)

D. \(\frac{220}{30+10A}\)

E. \(\frac{220}{40A}\)


Are You Up For the Challenge: 700 Level Questions
Manager
Manager
User avatar
B
Joined: 03 Nov 2019
Posts: 54
CAT Tests
Re: The Kiljaro Highway is marked with Milestones denoting the distance to  [#permalink]

Show Tags

New post 05 Dec 2019, 20:45
1
Distance = 240/ (30+10A)

Answer: A
Attachments

distance..JPG
distance..JPG [ 36.92 KiB | Viewed 319 times ]

Target Test Prep Representative
User avatar
V
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 9065
Location: United States (CA)
Re: The Kiljaro Highway is marked with Milestones denoting the distance to  [#permalink]

Show Tags

New post 08 Dec 2019, 20:43
Bunuel wrote:
The Kiljaro Highway is marked with Milestones denoting the distance to the town of Kiljaro. Tommy left kiljaro and drove the highway, passing the 10 km milestone at 8:30. Some time afterwards, Tommy got a phone call asking him to return home, and he made a U-turn at the 160 km milestone. At 09:A0 Tommy passed the milestone marking 70 km to Kiljaro. The variable A represents the tens digit of the minutes in 09:A0. Assuming Tommy maintained the same constant speed during the entire drive, how many kilometers did Tommy travel in one minute?


A. \(\frac{240}{30+10A}\)

B. \(\frac{240}{30+60A}\)

C. \(\frac{240}{40A}\)

D. \(\frac{220}{30+10A}\)

E. \(\frac{220}{40A}\)


Are You Up For the Challenge: 700 Level Questions


We can let A = 3. So in 1 hour, or 60 minutes, Tommy has driven (160 - 10) + (160 - 70) = 150 + 90 = 240 km. Therefore, his speed is 240/60 = 4 km per minute. Now let’s see which answer choice yields 4 when we substitute 3 for A.

A. 240/(30 + 10(3)) = 240/60 = 4 → Yes!

Even though we have found our answer, let’s prove it can’t the other choices. We don’t have to check choices B and D since they can’t be 4 (notice that B has the same numerator as A but a different denominator, whereas D has the same denominator as A but a different numerator).

C. 240/(40(3)) = 240/120 = 2 → No

E. 220/(40(3)) = 220/120 = 11/6 → No

Answer: A
_________________

Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
TTP - Target Test Prep Logo
181 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

GMAT Club Bot
Re: The Kiljaro Highway is marked with Milestones denoting the distance to   [#permalink] 08 Dec 2019, 20:43
Display posts from previous: Sort by

The Kiljaro Highway is marked with Milestones denoting the distance to

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





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