Last visit was: 22 Apr 2026, 01:37 It is currently 22 Apr 2026, 01:37
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
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 22 Apr 2026
Posts: 109,740
Own Kudos:
810,524
 [7]
Given Kudos: 105,816
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: 810,524
 [7]
Danny purchased a number of grease pumps of only two possible variants 09 Mar 2021, 01:15
1
Kudos
Add Kudos
6
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

45% (medium)

Question Stats:

66% (01:59) correct 34% (02:22) wrong based on 167 sessions

History

Date
Time
Result
Not Attempted Yet
Danny purchased a number of grease pumps of only two possible variants: $5 pumps and $25 pumps. If the ratio between the number of $5 pumps purchased and the number of $25 pumps purchased is 13:7, How many $5 grease pumps did Danny buy?

(1) The total purchase price of the grease pumps Danny bought was less than $400 .
(2) The total purchase price of the grease pumps Danny bought was greater than $200.

 
ShowHide Answer
Official Answer
A
User avatar
nick1816
User avatar
Retired Moderator
Joined: 19 Oct 2018
Last visit: 12 Mar 2026
Posts: 1,841
Own Kudos:
8,506
 [1]
Given Kudos: 707
Location: India
Posts: 1,841
Kudos: 8,506
 [1]
Danny purchased a number of grease pumps of only two possible variants 09 Mar 2021, 09:32
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Number of $5 pumps purchased = 13x, where x is a positive integer
Number of $25 pumps purchased = 7x

Total purchase price= 13x*5+7x*25 = 240x

Statement 1-

240x <400

x<1.wyz

Since x is a positive integer, x must be equal to 1.

Sufficient

Statement2- 240x>200

x> 0.abc

x can be any positive integer

Insufficient

Bunuel
Danny purchased a number of grease pumps of only two possible variants: $5 pumps and $25 pumps. If the ratio between the number of $5 pumps purchased and the number of $25 pumps purchased is 13:7, How many $5 grease pumps did Danny buy?

(1) The total purchase price of the grease pumps Danny bought was less than $400 .
(2) The total purchase price of the grease pumps Danny bought was greater than $200.
 
Show more
­
avatar
Kyala1Jameson
avatar
Joined: 09 Mar 2021
Last visit: 11 Jul 2021
Posts: 28
Own Kudos:
30
 [2]
Given Kudos: 25
Location: South Africa
Concentration: Leadership, Marketing
Schools: LBS MAM "23
GPA: 3.01
WE:Design (Computer Software)
Schools: LBS MAM "23
Posts: 28
Kudos: 30
 [2]
Danny purchased a number of grease pumps of only two possible variants 09 Mar 2021, 21:23
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Danny purchased a number of grease pumps of only two possible variants: $5 pumps and $25 pumps. If the ratio between the number of $5 pumps purchased and the number of $25 pumps purchased is 13:7, How many $5 grease pumps did Danny buy?

Number of $5 pumps purchased = 13x,
Number of $25 pumps purchased = 7x

Total purchase price= 13x*5+7x*25 = 240x

(1) The total purchase price of the grease pumps Danny bought was less than $400 .


240x <400 .
X must be 1 .
we can confidently say 13 $5 grease pumps did Danny buy
so Sufficient .


(2) The total purchase price of the grease pumps Danny bought was greater than $200.
240x > 400 .
X can be 2 , 3 ... or any no ..

So not sufficient ..

Ans is A
User avatar
HoneyLemon
User avatar
Stern School Moderator
Joined: 26 May 2020
Last visit: 02 Oct 2023
Posts: 627
Own Kudos:
571
 [1]
Given Kudos: 219
Status:Spirited
Concentration: General Management, Technology
Schools: Stern '23 LBS '23 Said '23 IIMB EPGP'22 INSEAD Jan'23 intake
WE:Analyst (Computer Software)
Schools: Stern '23 LBS '23 Said '23 IIMB EPGP'22 INSEAD Jan'23 intake
Posts: 627
Kudos: 571
 [1]
Danny purchased a number of grease pumps of only two possible variants 09 Mar 2021, 21:26
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
imo A

Danny purchased a number of grease pumps of only two possible variants: $5 pumps and $25 pumps. If the ratio between the number of $5 pumps purchased and the number of $25 pumps purchased is 13:7, How many $5 grease pumps did Danny buy?

(1) The total purchase price of the grease pumps Danny bought was less than $400 .


Number of $5 pumps purchased = 13x,
Number of $25 pumps purchased = 7x

Total purchase price= 13x*5+7x*25 = 240x

240x <400

Since x is a positive integer, x must be equal to 1.

Sufficient

(2) The total purchase price of the grease pumps Danny bought was greater than $200.


Number of $5 pumps purchased = 13x,
Number of $25 pumps purchased = 7x

Total purchase price= 13x*5+7x*25 = 240x

240x >400

Since x is a positive integer, x can be any value > 1.

Insufficient
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 22 Apr 2026
Posts: 109,740
Own Kudos:
810,524
 [1]
Given Kudos: 105,816
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: 810,524
 [1]
Danny purchased a number of grease pumps of only two possible variants 10 Mar 2021, 01:30
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
Danny purchased a number of grease pumps of only two possible variants: $5 pumps and $25 pumps. If the ratio between the number of $5 pumps purchased and the number of $25 pumps purchased is 13:7, How many $5 grease pumps did Danny buy?

(1) The total purchase price of the grease pumps Danny bought was less than $400 .
(2) The total purchase price of the grease pumps Danny bought was greater than $200.
 
Show more
Danny purchased a number of grease pumps of only two possible variants: $5 pumps and $25 pumps. If the ratio between the number of $5 pumps purchased and the number of $25 pumps purchased is 13:7, How many $5 grease pumps did Danny buy?

Given that \(\frac{({$}5 \ pumps)}{({$}25 \ pumps)}=\frac{13x}{7x}\), for some positive integer \(x\).

(1) The total purchase price of the grease pumps Danny bought was less than $400 --> \(5*13x+25*7x<400\) --> \(x<\frac{5}{3}\). Since \(x\) is an integer then \(x=1\) --> \(({$}5 \ pumps)=13x=13\). Sufficient.

(2) The total purchase price of the grease pumps Danny bought was greater than $200 --> \(5*13x+25*7x>200\) --> \(x>\frac{5}{6}\) --> \(x\) can be any integer more than or equal to 1. Not sufficient.

Answer: A.­
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 38,956
Own Kudos:
1,117
Posts: 38,956
Kudos: 1,117
Danny purchased a number of grease pumps of only two possible variants 16 Apr 2023, 07:30
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Automated notice from GMAT Club BumpBot:

A member just gave Kudos to this thread, showing it’s still useful. I’ve bumped it to the top so more people can benefit. Feel free to add your own questions or solutions.

This post was generated automatically.
Moderators:
Bunuel
Math Expert
109740 posts
kingbucky
498 posts
Gmat860sanskar
211 posts