Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 06 Jul 2015, 12:56

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# A certain shade of gray paint is obtained by mixing 3 parts

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
Senior Manager
Joined: 29 Jun 2005
Posts: 403
Followers: 1

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

A certain shade of gray paint is obtained by mixing 3 parts [#permalink]  24 Aug 2005, 15:43
A certain shade of gray paint is obtained by mixing 3 parts of white paint with 5 parts of black paint. If 2 gallons of the mixture is needed and the individual colors can be purchased only in one-gallon or half- gallon cans, what is the least amount of paint, in gallons, that must be purchased in order to measure out the portions needed for the mixture?
(A) 2
(B) 2,5
(C) 3
(D) 3,5
(E) 4

Please, post the time it took you to solve.
Current Student
Joined: 28 Dec 2004
Posts: 3387
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 14

Kudos [?]: 186 [0], given: 2

[#permalink]  24 Aug 2005, 16:01
hmm...I would go with B...took me about 40 secs....

here is what I did:

W:B
3:5

3/8*2=0.75 Liters of W, which means I would take 1 gallon of

5/8*2=5/8 liters which is about 1.5 litters, i bought 1 gallon of Black and then bought half gallon of Black...

total 2.5Liters...
Director
Joined: 11 Mar 2005
Posts: 726
Followers: 2

Kudos [?]: 28 [0], given: 0

[#permalink]  24 Aug 2005, 16:28
I am coming up with E.
Intern
Joined: 24 Aug 2005
Posts: 8
Followers: 0

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

[#permalink]  24 Aug 2005, 18:19
B it is: 2.5

3x+5x = 8

x= 1/4

white: 3/4 (1 gallon)

black: 5/4 (1.5 gallon)
Senior Manager
Joined: 29 Nov 2004
Posts: 486
Location: Chicago
Followers: 1

Kudos [?]: 11 [0], given: 0

Re: Mixtures - how much time it took you to solve? [#permalink]  25 Aug 2005, 03:22
My answer is E, under 1 minute...

1.5 white, 2.5 black so 4.

I think 0.75 (1 gal) and 1.25 (1.5 gal) is wrong, because we cannot measure out anything other than 0.5 and 1 or multiples.

If thats the case we might as well go for 0.375 (0.5 gal) and 0.625 (1gal), so answer would be 1.5 which is not in the choices....
_________________

Fear Mediocrity, Respect Ignorance

Manager
Joined: 28 Jun 2005
Posts: 217
Followers: 1

Kudos [?]: 3 [0], given: 0

[#permalink]  25 Aug 2005, 04:32
one more B; under 1 min
Manager
Joined: 07 Jun 2005
Posts: 90
Followers: 1

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

[#permalink]  29 Aug 2005, 23:57
I would go with E for reasons that ranga gave. If you bought 1 gallon of white paint how will you measure 0.75G? same reason with the black paint.

took me abt 1 min
Manager
Joined: 21 Mar 2005
Posts: 115
Location: Basel
Followers: 1

Kudos [?]: 6 [0], given: 0

[#permalink]  31 Aug 2005, 02:42
I go with E .

that must be purchased in order to measure out the portions needed for the mixture?
IMO this clearly states that we can just use 0.5 g and 1 g.
Manager
Joined: 09 Nov 2004
Posts: 138
Followers: 1

Kudos [?]: 3 [0], given: 0

[#permalink]  02 Sep 2005, 12:14
what is the OA....I get 2.5
_________________

Thanks!

Manager
Joined: 09 Nov 2004
Posts: 138
Followers: 1

Kudos [?]: 3 [0], given: 0

[#permalink]  03 Sep 2005, 12:22
Dishod,
What is the OA?
_________________

Thanks!

Manager
Joined: 09 Nov 2004
Posts: 138
Followers: 1

Kudos [?]: 3 [0], given: 0

[#permalink]  03 Sep 2005, 12:24
Ranga41......Is that an assumption that we don't have a measuring method available....Sure, we could buy a min of 2.5 and measure on our own versus have the paint seller measure prior to selling(which in real life does not work either, btw)?

Very keen to know the OA now?
_________________

Thanks!

Senior Manager
Joined: 29 Jun 2005
Posts: 403
Followers: 1

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

[#permalink]  04 Sep 2005, 21:19
The OA is B.
Ranga41 - My method of thinking was the same as yours. thats why I get it wrong.

All, who don't agree with B - read the question stem again. i agree with B.
[#permalink] 04 Sep 2005, 21:19
Similar topics Replies Last post
Similar
Topics:
A certain manufacturer of cake, muffin, and bread mixes has 3 27 Jun 2008, 19:41
The number of ways in which 3 paintings can be arranged in 9 16 Dec 2007, 11:04
A certain manufacturer of cake, muffin, and bread mixes has 5 27 Feb 2007, 17:00
At a certain paint store "forest green" is made by mixing 4 4 16 Sep 2006, 04:56
A certain shade of gray paint is obtained by mixing 3 parts 5 25 Apr 2006, 12:18
Display posts from previous: Sort by

# A certain shade of gray paint is obtained by mixing 3 parts

 Question banks Downloads My Bookmarks Reviews Important topics

 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®.