GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 24 Sep 2018, 10:43

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

A dishonest milkman wants to make a profit on the selling of

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

Hide Tags

Intern
Intern
avatar
Status: gmat fresher
Joined: 07 Jun 2012
Posts: 25
GPA: 3.87
A dishonest milkman wants to make a profit on the selling of  [#permalink]

Show Tags

New post Updated on: 19 Dec 2013, 12:49
12
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

68% (02:37) correct 32% (02:38) wrong based on 222 sessions

HideShow timer Statistics

A dishonest milkman wants to make a profit on the selling of milk. He would like to mix water (costing nothing) with milk costing Rs.33 per litre so as to make a profit of 20% on cost when he sells the resulting milk and water mixture for Rs.36 In what ratio should he mix the water and milk?

(A) 1:20
(B) 1:10
(C) 1:8
(D) 1:4
(E) 6:11

Originally posted by sdpp143 on 19 Dec 2013, 12:45.
Last edited by Bunuel on 19 Dec 2013, 12:49, edited 1 time in total.
RENAMED THE TOPIC.
Most Helpful Community Reply
Manager
Manager
avatar
Joined: 19 Apr 2013
Posts: 74
Concentration: Entrepreneurship, Finance
GMAT Date: 06-05-2015
GPA: 3.88
WE: Programming (Computer Software)
GMAT ToolKit User
Re: A dishonest milkman wants to make a profit on the selling of  [#permalink]

Show Tags

New post 19 Dec 2013, 20:07
8
2
sdpp143 wrote:
A dishonest milkman wants to make a profit on the selling of milk. He would like to mix water (costing nothing) with milk costing Rs.33 per litre so as to make a profit of 20% on cost when he sells the resulting milk and water mixture for Rs.36 In what ratio should he mix the water and milk?

(A) 1:20
(B) 1:10
(C) 1:8
(D) 1:4
(E) 6:11


Hi, This is a Mixture question.
For Solution Please see attachement.

Thanks AB,

+1 Kudos if you like and Understand.


Attachments

Sol_1.jpg
Sol_1.jpg [ 42.36 KiB | Viewed 10251 times ]


_________________

Thanks,
AB

+1 Kudos if you like and understand.

General Discussion
Intern
Intern
avatar
Status: gmat fresher
Joined: 07 Jun 2012
Posts: 25
GPA: 3.87
Re: A dishonest milkman wants to make a profit on the selling of  [#permalink]

Show Tags

New post 20 Dec 2013, 11:27
But you made a small mistake :wink:
C.P of 1 litre of mixture =(100/120)*36 =30
Retired Moderator
User avatar
Joined: 20 Dec 2013
Posts: 178
Location: United States (NY)
GMAT 1: 640 Q44 V34
GMAT 2: 710 Q48 V40
GMAT 3: 720 Q49 V40
GPA: 3.16
WE: Consulting (Venture Capital)
GMAT ToolKit User Premium Member Reviews Badge
Re: A dishonest milkman wants to make a profit on the selling of  [#permalink]

Show Tags

New post 20 Dec 2013, 23:03
my approach:

cost needed to net a 20% profit:
(36-x)/x = .2
x=30

actual cost:
33

solution (x=liters of water needed to be added to the 1liter of milk):
33/(1+x)=30
x = 1/10

so to get the cost down to 30
Milk:Water
1:1/10

or (10/10):(1/10)
_________________

MY GMAT BLOG - ADVICE - OPINIONS - ANALYSIS

Retired Moderator
User avatar
Joined: 16 Jun 2012
Posts: 1060
Location: United States
Premium Member
Re: A dishonest milkman wants to make a profit on the selling of  [#permalink]

Show Tags

New post 21 Dec 2013, 02:29
2
1
sdpp143 wrote:
A dishonest milkman wants to make a profit on the selling of milk. He would like to mix water (costing nothing) with milk costing Rs.33 per litre so as to make a profit of 20% on cost when he sells the resulting milk and water mixture for Rs.36 In what ratio should he mix the water and milk?

(A) 1:20
(B) 1:10
(C) 1:8
(D) 1:4
(E) 6:11


Name:
water = w (liter)
Milk = m (liter)

==> Cost = Price x Quantity = 0.33m
==> Revenue = Price x Quantity = 0.36(m + w)
==> Profit = 0.36(m+w) - 0.33m = 0.2*(0.33m) [20% of cost]
==> 0.36m + 0.36w - 0.33m = 0.066m
==> 0.036m = 0.36w
==> m/w = 0.36/0.036 = 10
--OR--
w/m = 1/10

B is correct.

Hope it helps.
_________________

Please +1 KUDO if my post helps. Thank you.

"Designing cars consumes you; it has a hold on your spirit which is incredibly powerful. It's not something you can do part time, you have do it with all your heart and soul or you're going to get it wrong."

Chris Bangle - Former BMW Chief of Design.

Intern
Intern
avatar
Joined: 02 Jul 2015
Posts: 17
Re: A dishonest milkman wants to make a profit on the selling of  [#permalink]

Show Tags

New post 22 Oct 2015, 10:13
Well. This might be one of the easiest methods. Solved this within a minute. In these type of questions plugging in the options might help you save a lot of time. For that, first choose the median ratio and plug in. You ll know whether the median ratio is right or wrong. If wrong, then you ll know whether the ratio is higher or lower than the median. So you ll eliminate 3 answer choices here. Out of the remaining two, plug in one ratio. If its right you got your answer. If its not, then the other one is your answer.
Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 8174
Premium Member
Re: A dishonest milkman wants to make a profit on the selling of  [#permalink]

Show Tags

New post 11 May 2018, 06:59
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

GMAT Club Bot
Re: A dishonest milkman wants to make a profit on the selling of &nbs [#permalink] 11 May 2018, 06:59
Display posts from previous: Sort by

A dishonest milkman wants to make a profit on the selling of

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

Events & Promotions

PREV
NEXT


Copyright

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

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

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®.