Find all School-related info fast with the new School-Specific MBA Forum
Learn more about the recent changes... close

It is currently 25 May 2013, 00:35
Customize  |  Hide

Search
Register
New posts
Unanswered

When a truck travels at 60 miles per hour, it uses 30% more

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
Senior Manager
Senior Manager
User avatar
Joined: 02 Sep 2006
Posts: 255
Followers: 1

Kudos [?]: 4 [0], given: 0

GMAT Tests User
When a truck travels at 60 miles per hour, it uses 30% more [#permalink] New post 18 Sep 2006, 15:15
00:00

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 1 sessions
When a truck travels at 60 miles per hour, it uses 30% more gasoline to travel any distance than it does when it travels any distance than it does when it travels at 50 miles per hour. The truck can travel 20 miles on a gallon of gas if it is traveling at 50 miles per hour. The truck has only 10 gallons of gas and is 160 miles from its destination. it takes 20 minutes for the truck to stop for gas. How long will it take the truck to reach its final destination if the truck is driven at 60 miles per hour?

A. 160 minutes
B. 180 minutes
C. 190 minutes
D. 192 minutes
E. 195 minutes
VP
VP
User avatar
Joined: 02 Jun 2006
Posts: 1278
Followers: 2

Kudos [?]: 15 [0], given: 0

GMAT Tests User
 [#permalink] New post 18 Sep 2006, 15:24
B. 180 minutes

E50 = 20mpg
E60 = 0.7 x E50 = 14mpg

Amount of gas = 10 gallons
Dist to dest = 160 miles
Speed = 60 mph

Total time to dest = 160/60 x 60 = 160 minutes

As 10 x 14 < 160, need to stop 20 minutes to refuel.

Total time = 160 + 20 = 180 minutes.
Intern
Intern
User avatar
Joined: 17 Sep 2006
Posts: 45
Location: China
Followers: 0

Kudos [?]: 0 [0], given: 0

 [#permalink] New post 18 Sep 2006, 15:41
the answer is B

at 50 miles/hr rate,
every hr needs 2.5gallons of gas {(50 miles/hr)/(20miles/ Gallon)=2.5 gollons/hr}
160/50=3.2hr
3.2*2.5=8 gallons
at 60 miles/hr rate, the truck use 30% more gasline
8*1.3=10.4 gallons
total time=160/60*60+20=180minutes
Senior Manager
Senior Manager
User avatar
Joined: 28 Aug 2006
Posts: 302
Followers: 7

Kudos [?]: 39 [0], given: 0

GMAT Tests User
 [#permalink] New post 19 Sep 2006, 01:30
Iawfy wrote:
the answer is B

at 50 miles/hr rate,
every hr needs 2.5gallons of gas {(50 miles/hr)/(20miles/ Gallon)=2.5 gollons/hr}
160/50=3.2hr
3.2*2.5=8 gallons
at 60 miles/hr rate, the truck use 30% more gasline
8*1.3=10.4 gallons
total time=160/60*60+20=180minutes


Hi iamwfy,

we can conclude the above thing fast.......

At 50mph truck needs 1 gallon for 20 miles.
At 60mph truck needs 1.3gallons for the same 20 miles(bcoz the consumption is 30%higher)

It has to travel 160 miles at 60mph,so it will need 1.3 x 8 =10.4 gallons.
Since it has only 10 gallons it has to wait for 20 minutes to get the extra 0.4 gallon.

So total time is 160minutes +20 minutes = 180
_________________

Averages Accelerated:Guide to solve Averages Quickly(with 10 practice problems)


Last edited by cicerone on 25 Sep 2008, 00:59, edited 1 time in total.
Director
Director
Joined: 06 Sep 2006
Posts: 749
Followers: 1

Kudos [?]: 8 [0], given: 0

GMAT Tests User
 [#permalink] New post 19 Sep 2006, 10:49
@60 mph mileage = (1 - 0.3) * 20 = 14 mpg

Time = Distance/speed
TIme = 160/60 hours
Time = 160/60 * 60 minutes
Time = 160 minutes.
Since the truck is using gas at the rate of 14 mpg and there are only 10 gallons. So,

Time = 160 + 20 = 180.

ANSWER: B
Senior Manager
Senior Manager
User avatar
Joined: 28 Aug 2006
Posts: 302
Followers: 7

Kudos [?]: 39 [0], given: 0

GMAT Tests User
 [#permalink] New post 19 Sep 2006, 10:50
lan583 wrote:
cicerone wrote:
Iawfy wrote:
the answer is B

at 50 miles/hr rate,
every hr needs 2.5gallons of gas {(50 miles/hr)/(20miles/ Gallon)=2.5 gollons/hr}
160/50=3.2hr
3.2*2.5=8 gallons
at 60 miles/hr rate, the truck use 30% more gasline
8*1.3=10.4 gallons
total time=160/60*60+20=180minutes


Hi iamwfy,

we can conclude the above thing fast.......

At 50mph truck needs 1 gallon for 20 miles.
At 60mph truck needs 1.3gallons for the same 20 miles(bcoz the consumption is 30%higher)

It has to travel 160 miles at 60mph,so it will need 1.3 x 8 =10.4 gallons.
Since it has only 10 gallons it has to wait for 20 minutes to get the extra 0.4 gallon.

So total time is 160minutes +20 minutes = 180


Where did you get 160 minutes? Thanks


To travel 160 miles with 60mph it will obviously take 160 minutes and 20 more minutes to fill the extra gas needed
  [#permalink] 19 Sep 2006, 10:50
    Similar topics Author Replies Last post
Similar
Topics:
 New posts when a truck travels at 60 miles per hour, it uses 30% more christoph 6 24 Feb 2005, 04:42
New posts A car saves 50% more gas when travelling at 30 miles/hour withme 1 18 Jan 2007, 08:38
New posts When a truck travels at 60 miles per hour, it uses 30% more andrehaui 8 23 Apr 2007, 06:45
New posts 1 EXPERTS_POSTS_IN_THIS_TOPIC Train A leaves the station traveling at 30 miles per hour. loveparis 2 09 Feb 2011, 15:16
New posts When a truck travels at 60 mph, it takes 30% more gasoline Madelaine88 2 27 Feb 2011, 11:45
Display posts from previous: Sort by

When a truck travels at 60 miles per hour, it uses 30% more

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: Bunuel, VeritasPrepKarishma, IanStewart

Search for:


cron

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

Powered by phpBB © phpBB Group and phpBB SEO

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®.

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com