Last visit was: 22 Apr 2026, 05:02 It is currently 22 Apr 2026, 05:02
Home
Messages
Tests
Schools
Events
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
User avatar
faifai0714
User avatar
Joined: 02 Sep 2006
Last visit: 11 Apr 2007
Posts: 175
Own Kudos:
626
 [60]
Posts: 175
Kudos: 626
 [60]
When a truck travels at 60 miles per hour, it uses 30% more Updated on: 20 Aug 2013, 06:24
Originally posted by faifai0714 on 18 Sep 2006, 15:15.
Last edited by Bunuel on 20 Aug 2013, 06:24, edited 1 time in total.
Edited the question and added the OA.
5
Kudos
Add Kudos
55
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

55% (hard)

Question Stats:

74% (03:15) correct 26% (03:08) wrong based on 669 sessions

History

Date
Time
Result
Not Attempted Yet
When a truck travels at 60 miles per hour, it uses 30% more gasoline to travel 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
ShowHide Answer
Official Answer
B
User avatar
Iawfy
User avatar
Joined: 17 Sep 2006
Last visit: 29 Dec 2006
Posts: 21
Own Kudos:
7
 [4]
Location: China
Posts: 21
Kudos: 7
 [4]
When a truck travels at 60 miles per hour, it uses 30% more 18 Sep 2006, 15:41
2
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
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
User avatar
cicerone
User avatar
Joined: 28 Aug 2006
Last visit: 10 May 2019
Posts: 163
Own Kudos:
316
 [4]
Posts: 163
Kudos: 316
 [4]
When a truck travels at 60 miles per hour, it uses 30% more Updated on: 25 Sep 2008, 00:59
Originally posted by cicerone on 19 Sep 2006, 01:30.
Last edited by cicerone on 25 Sep 2008, 00:59, edited 1 time in total.
3
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
Iawfy
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
Show more

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
User avatar
gmat1220
User avatar
Joined: 03 Feb 2011
Last visit: 17 Feb 2020
Posts: 461
Own Kudos:
1,015
 [2]
Given Kudos: 123
Status:Impossible is not a fact. It's an opinion. It's a dare. Impossible is nothing.
Affiliations: University of Chicago Booth School of Business
Products:
My Reviews
Posts: 461
Kudos: 1,015
 [2]
When a truck travels at 60 miles per hour, it uses 30% more Updated on: 27 Feb 2011, 12:11
Originally posted by gmat1220 on 27 Feb 2011, 12:04.
Last edited by gmat1220 on 27 Feb 2011, 12:11, edited 1 time in total.
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
New mileage @ 60mph = 20/1.3 miles per gallon
Gallons of gas required to cover 160 miles @ 60mph = 160 / (20 / 1.3). But its tank hold only 10 gallons. Hence the truck will make one stop for 20 min.

Normal time to cover 160 miles = 160/60 hr = 160 mins.
Now total time = 160 mins + 20 mins = 180 mins

Madelaine88
When a truck travels at 60 mph, it takes 30% more gasoline to travel any distance than it does when it travels at 50 mph. The truck can travel 20 miles on a gallon of gas if it is travelling at 50mph. The truck has only 10 gallons of gas and is 160 miles from its destination. It takes 20 minutes for the truck stop for gas. How long will it take the truck to reach its final destination if the truck is driven at 60 mph?

A/ 160 min
B/ 180 min
C/ 190 min
D/ 192 min
E/ 195 min
Show more
User avatar
fluke
User avatar
Retired Moderator
Joined: 20 Dec 2010
Last visit: 24 Oct 2013
Posts: 1,095
Own Kudos:
5,167
 [3]
Given Kudos: 376
Posts: 1,095
Kudos: 5,167
 [3]
When a truck travels at 60 miles per hour, it uses 30% more 27 Feb 2011, 12:09
3
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Sol:
The question is how many times the truck stops for refueling?

If it didn't have to stop; then the truck would travel a distance of 160 m @ 60mph in

160/60 = 2hours 40minutes

Let's see how many times the truck will have to stop for the gas;

@ 60 mph, the mileage of the truck will be;
\(\frac{20}{1.3}\)

So; in 10 gallons; the truck will travel
\(\frac{20*10}{1.3} miles\)
\(\frac{20*10}{1.3} miles \approx 153 miles\)

Still few miles short of 160. Thus; refueling the tank once would suffice even if the tank's capacity is just 10 gallons.

If the truck stopped once for the fill; then it spent an extra 20 minutes.

Total travel time = 2 hour 40 min+20 min = 3 hours = 180 mins

Ans: "B"
User avatar
prasannajeet
User avatar
Joined: 26 Feb 2012
Last visit: 10 Nov 2017
Posts: 74
Own Kudos:
140
Given Kudos: 56
Location: India
Concentration: General Management, Finance
WE:Engineering (Telecommunications)
Posts: 74
Kudos: 140
When a truck travels at 60 miles per hour, it uses 30% more 20 Aug 2013, 06:17
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hi Bunuel

Can u clarify, is gallon consumption has to play a vital part to solve it???
I don't think so. Its mentioned to make someone confused...

Rgds
Prasannajeet
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 22 Apr 2026
Posts: 109,740
Own Kudos:
810,552
 [2]
Given Kudos: 105,819
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,740
Kudos: 810,552
 [2]
When a truck travels at 60 miles per hour, it uses 30% more 20 Aug 2013, 06:34
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
prasannajeet
When a truck travels at 60 miles per hour, it uses 30% more gasoline to travel 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

Hi Bunuel

Can u clarify, is gallon consumption has to play a vital part to solve it???
I don't think so. Its mentioned to make someone confused...

Rgds
Prasannajeet
Show more

We use consumption to see whether 10 gallons are enough to travel 160 miles, so whether 20 additional minutes will be needed to refuel while covering the distance.

Hope it helps.
User avatar
prasannajeet
User avatar
Joined: 26 Feb 2012
Last visit: 10 Nov 2017
Posts: 74
Own Kudos:
140
Given Kudos: 56
Location: India
Concentration: General Management, Finance
WE:Engineering (Telecommunications)
Posts: 74
Kudos: 140
When a truck travels at 60 miles per hour, it uses 30% more 20 Aug 2013, 07:15
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hi Bunuel

Understood and thanx for explanation

Rgds
Prasannajeet
User avatar
VeritasPrepRon
User avatar
Veritas Prep GMAT Instructor
Joined: 11 Dec 2012
Last visit: 27 Feb 2026
Posts: 306
Own Kudos:
703
 [2]
Given Kudos: 66
Expert
Expert reply
Posts: 306
Kudos: 703
 [2]
When a truck travels at 60 miles per hour, it uses 30% more 20 Aug 2013, 07:38
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
faifai0714
When a truck travels at 60 miles per hour, it uses 30% more gasoline to travel 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
Show more

The answer is indeed B, but I feel like this question could be made more interesting (or perhaps just harder) if we introduced a choice. The driver can drive at 50 mph or 60 mph. What is the minimum amount of time he could take to reach his destination. Then we'd need to add in 160 miles / 50 mph = 3.2 hours, or 180 minutes + (\(\frac{1}{5} * 60\)) = 192 minutes (not coincidentally answer choice D).

Then we could compare D to B and determine that going 60 mph is faster than 50 and pick B as the overall answer. Of course this might make people think that if he drove at ~55 mph he'd probably get there in under 3 hours without having to refuel. :wink:

Just fuel for understanding GMAT algebra concepts!

Thanks!
-Ron
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 22 Apr 2026
Posts: 109,740
Own Kudos:
810,552
Given Kudos: 105,819
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,740
Kudos: 810,552
When a truck travels at 60 miles per hour, it uses 30% more 20 Aug 2013, 07:48
Kudos
Add Kudos
Bookmarks
Bookmark this Post
VeritasPrepRon
faifai0714
When a truck travels at 60 miles per hour, it uses 30% more gasoline to travel 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

The answer is indeed B, but I feel like this question could be made more interesting (or perhaps just harder) if we introduced a choice. The driver can drive at 50 mph or 60 mph. What is the minimum amount of time he could take to reach his destination. Then we'd need to add in 160 miles / 50 mph = 3.2 hours, or 180 minutes + (\(\frac{1}{5} * 60\)) = 192 minutes (not coincidentally answer choice D).

Then we could compare D to B and determine that going 60 mph is faster than 50 and pick B as the overall answer. Of course this might make people think that if he drove at ~55 mph he'd probably get there in under 3 hours without having to refuel. :wink:

Just fuel for understanding GMAT algebra concepts!

Thanks!
-Ron
Show more

+1.

Thank you Ron for giving me an idea for a question.
User avatar
Natansha
User avatar
Joined: 13 Jun 2019
Last visit: 11 Mar 2026
Posts: 195
Own Kudos:
65
Given Kudos: 84
Posts: 195
Kudos: 65
When a truck travels at 60 miles per hour, it uses 30% more 23 Sep 2025, 11:15
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hi Bunuel here the mileage at the speed of 60mph will be = 20/1.3 miles per gallon or it will 0.7*20 = 14 miles per galloon, which one will be the right one?

Bunuel


We use consumption to see whether 10 gallons are enough to travel 160 miles, so whether 20 additional minutes will be needed to refuel while covering the distance.

Hope it helps.
Show more
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 22 Apr 2026
Posts: 109,740
Own Kudos:
810,552
Given Kudos: 105,819
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 109,740
Kudos: 810,552
When a truck travels at 60 miles per hour, it uses 30% more 23 Sep 2025, 11:48
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Natansha
Hi Bunuel here the mileage at the speed of 60mph will be = 20/1.3 miles per gallon or it will 0.7*20 = 14 miles per galloon, which one will be the right one?


Show more

We are told that at 60 mph the truck uses 30% more gasoline to travel the same distance than at 50 mph.

At 50 mph, it travels 20 miles per gallon, so 20 miles require 1 gallon.

At 60 mph, 20 miles (the same distance) will require 1.3 gallons (30% more).

That means at 60 mph, 1 gallon will cover 20/1.3 ≈ 15.4 miles.

So the correct way is 20/1.3, not 0.7 * 20.
Moderators:
Bunuel
Math Expert
109740 posts
Krunaal
Tuck School Moderator
853 posts