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

It is currently 21 Mar 2019, 00:53

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 milk-man sells milk after mixing water to it to such a extent that w

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

Hide Tags

 
Manager
Manager
avatar
P
Joined: 29 Nov 2018
Posts: 134
Concentration: Marketing, Strategy
A milk-man sells milk after mixing water to it to such a extent that w  [#permalink]

Show Tags

New post 24 Feb 2019, 11:28
1
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

54% (01:57) correct 46% (02:32) wrong based on 24 sessions

HideShow timer Statistics

A milk-man sells milk after mixing water to it to such a extent that water accounts for 20% of the mixture. If he sells at a mark-up rate of 10%, find his actual profit percentage.

1. 30%
2. 32%
3. 33.33%
4. 37.5%
5. 40%
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7426
Re: A milk-man sells milk after mixing water to it to such a extent that w  [#permalink]

Show Tags

New post 24 Feb 2019, 21:03
cfc198 wrote:
A milk-man sells milk after mixing water to it to such a extent that water accounts for 20% of the mixture. If he sells at a mark-up rate of 10%, find his actual profit percentage.

1. 30%
2. 32%
3. 33.33%
4. 37.5%
5. 40%


80% gone wrong means that we have not been able to understand and convert the question properly.

Ok, the first sentence says that 20% is water, so only 80% is milk. Say 100 litres of mixture contains 80liter of milk.
Next the price has been increased by 10% so if the price was 200, it has become 200+10% of 200=200+20=220.

So, if 100 litre costed 200 earlier, 80 liter would cost (200/100)*80=2*80=160. Now that 80 litre is selling at 220, so a profit of 60 on 160..

As a %, (60/160)*100=600/16=75/2=37.5%

D
_________________

1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html
4) Base while finding % increase and % decrease : https://gmatclub.com/forum/percentage-increase-decrease-what-should-be-the-denominator-287528.html


GMAT Expert

Manager
Manager
avatar
S
Joined: 14 May 2018
Posts: 91
Location: India
Concentration: Finance, Entrepreneurship
GMAT 1: 710 Q49 V38
GPA: 4
Re: A milk-man sells milk after mixing water to it to such a extent that w  [#permalink]

Show Tags

New post 24 Feb 2019, 23:17
1
cfc198 wrote:
A milk-man sells milk after mixing water to it to such a extent that water accounts for 20% of the mixture. If he sells at a mark-up rate of 10%, find his actual profit percentage.

1. 30%
2. 32%
3. 33.33%
4. 37.5%
5. 40%



Let us assume that cost of milk=100
He sells for 10% profit i.e. for 110
however his cost of milk is only 80 (since 20% is water and only 80% is milk)
now see cost price=80 and sell price=110

% profit= ((110-80)/80)*100=(30/80)*100=37.5%
_________________

Please hit kudos if you like my answers.

GMAT:710 (Q49,V38,IR8,AWA5)

GMAT Club Bot
Re: A milk-man sells milk after mixing water to it to such a extent that w   [#permalink] 24 Feb 2019, 23:17
Display posts from previous: Sort by

A milk-man sells milk after mixing water to it to such a extent that w

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


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®.