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

It is currently 20 Oct 2019, 13:06

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

The ratio of flour to water to sugar in a recipe is 7:4:1.

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

Hide Tags

Find Similar Topics 
Intern
Intern
User avatar
Joined: 11 Oct 2013
Posts: 18
Location: United Kingdom
Concentration: General Management, Leadership
GMAT 1: 490 Q32 V25
GPA: 3.9
WE: Other (Other)
GMAT ToolKit User
The ratio of flour to water to sugar in a recipe is 7:4:1.  [#permalink]

Show Tags

New post 21 Jan 2014, 15:10
1
17
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

65% (01:58) correct 35% (02:13) wrong based on 411 sessions

HideShow timer Statistics

The ratio of flour to water to sugar in a recipe is 7:4:1. The ratio in a new recipe calls for a doubling of the ratio of flour to water from the original recipe and a halving of the ratio of flour to sugar. If the new recipe calls for 8 cups of water, how much sugar is required?

(A) 4 cups
(B) 6 cups
(C) 8 cups
(D) 12 cups
(E) 16 cups

_________________
Good things come to those who wait… greater things come to those who get off their ass and do anything to make it happen...
Most Helpful Expert Reply
Veritas Prep GMAT Instructor
User avatar
V
Joined: 16 Oct 2010
Posts: 9704
Location: Pune, India
Re: The ratio of flour to water to sugar in a recipe is 7:4:1.  [#permalink]

Show Tags

New post 21 Jan 2014, 21:38
2
4
3111987 wrote:
The ratio of flour to water to sugar in a recipe is 7:4:1. The ratio in a new recipe calls for a doubling of the ratio of flour to water from the original recipe and a halving of the ratio of flour to sugar. If the new recipe calls for 8 cups of water, how much sugar is required?

(A) 4 cups
(B) 6 cups
(C) 8 cups
(D) 12 cups
(E) 16 cups


Flour:Water:Sugar = 7:4:1

Flour:Water = 7:4
New Ratio of Flour:Water = 14:4 = 7:2 (Multiplying the ratio by 2)

Flour:Sugar = 7:1
New Ratio of Flour:Sugar = 7:2 (Halving the ratio)

New Ratio of Flour:Water:Sugar = 7:2:2

For every 2 cups of water, there is 2 cups of sugar. IF you have 8 cups of water, you need 8 cups of sugar.
_________________
Karishma
Veritas Prep GMAT Instructor

Learn more about how Veritas Prep can help you achieve a great GMAT score by checking out their GMAT Prep Options >
General Discussion
Intern
Intern
User avatar
Joined: 11 Oct 2013
Posts: 18
Location: United Kingdom
Concentration: General Management, Leadership
GMAT 1: 490 Q32 V25
GPA: 3.9
WE: Other (Other)
GMAT ToolKit User
Re: The ratio of flour to water to sugar in a recipe is 7:4:1.  [#permalink]

Show Tags

New post 22 Jan 2014, 16:29
VeritasPrepKarishma wrote:
3111987 wrote:
The ratio of flour to water to sugar in a recipe is 7:4:1. The ratio in a new recipe calls for a doubling of the ratio of flour to water from the original recipe and a halving of the ratio of flour to sugar. If the new recipe calls for 8 cups of water, how much sugar is required?

(A) 4 cups
(B) 6 cups
(C) 8 cups
(D) 12 cups
(E) 16 cups


Flour:Water:Sugar = 7:4:1

Flour:Water = 7:4
New Ratio of Flour:Water = 14:4 = 7:2 (Multiplying the ratio by 2)

Flour:Sugar = 7:1
New Ratio of Flour:Sugar = 7:2 (Halving the ratio)

New Ratio of Flour:Water:Sugar = 7:2:2

For every 2 cups of water, there is 2 cups of sugar. IF you have 8 cups of water, you need 8 cups of sugar.





dear Karishma big thanks for explanation)
questioin:
why when you doubling the ratio you multiply both and 7 and 4 but when you halving you apply to one side of ratio 7:2???
_________________
Good things come to those who wait… greater things come to those who get off their ass and do anything to make it happen...
Intern
Intern
avatar
Joined: 27 Dec 2013
Posts: 31
Concentration: Finance, General Management
Schools: ISB '15
Re: The ratio of flour to water to sugar in a recipe is 7:4:1.  [#permalink]

Show Tags

New post 23 Jan 2014, 00:01
3111987 wrote:
The ratio of flour to water to sugar in a recipe is 7:4:1. The ratio in a new recipe calls for a doubling of the ratio of flour to water from the original recipe and a halving of the ratio of flour to sugar. If the new recipe calls for 8 cups of water, how much sugar is required?

(A) 4 cups
(B) 6 cups
(C) 8 cups
(D) 12 cups
(E) 16 cups


Hello,

Flour/Water = 7/4, Flour/Sugar = 7/1

Double the ratio of Flour/Water = 7/4 * 2 = 7/2

Halve the ratio of Flour to Sugar = 7 * 1/2 = 7/2

The new ratio of Flour: Water: Sugar = 7:2:2

For 8 cups of water in the new recipe, sugar required will be 8 cups.

Answer is C

Hope this helps :)
_________________
Kindly consider for kudos if my post was helpful!
Veritas Prep GMAT Instructor
User avatar
V
Joined: 16 Oct 2010
Posts: 9704
Location: Pune, India
Re: The ratio of flour to water to sugar in a recipe is 7:4:1.  [#permalink]

Show Tags

New post 23 Jan 2014, 03:06
2
3111987 wrote:
VeritasPrepKarishma wrote:
3111987 wrote:
The ratio of flour to water to sugar in a recipe is 7:4:1. The ratio in a new recipe calls for a doubling of the ratio of flour to water from the original recipe and a halving of the ratio of flour to sugar. If the new recipe calls for 8 cups of water, how much sugar is required?

(A) 4 cups
(B) 6 cups
(C) 8 cups
(D) 12 cups
(E) 16 cups


Flour:Water:Sugar = 7:4:1

Flour:Water = 7:4
New Ratio of Flour:Water = 14:4 = 7:2 (Multiplying the ratio by 2)

Flour:Sugar = 7:1
New Ratio of Flour:Sugar = 7:2 (Halving the ratio)

New Ratio of Flour:Water:Sugar = 7:2:2

For every 2 cups of water, there is 2 cups of sugar. IF you have 8 cups of water, you need 8 cups of sugar.


dear Karishma big thanks for explanation)
questioin:
why when you doubling the ratio you multiply both and 7 and 4 but when you halving you apply to one side of ratio 7:2???


I am not sure I follow you.

Original Ratio of Flour:Water \(= 7:4 = \frac{7}{4}\)
New Ratio of Flour:Water (original will be doubled) \(= \frac{7}{4}*2 = \frac{14}{4}\)

Thereafter, I brought 14/4 to lowest terms 7/2.

Original Ratio of Flour:Sugar \(= 7:1 = \frac{7}{1}\)
New Ratio of Flour:Sugar (original will be halved) \(= \frac{7}{1*2} = \frac{7}{2}\)
_________________
Karishma
Veritas Prep GMAT Instructor

Learn more about how Veritas Prep can help you achieve a great GMAT score by checking out their GMAT Prep Options >
Current Student
avatar
B
Joined: 20 Jun 2017
Posts: 64
Location: India
GMAT 1: 720 Q50 V38
GPA: 4
Reviews Badge
Re: The ratio of flour to water to sugar in a recipe is 7:4:1.  [#permalink]

Show Tags

New post 25 Jun 2017, 08:24
Answer= B

Flour: Water:Sugar = 7:4:1

F:W is doubled so it becomes 14:4
And F:S is halved so it becomes 7:2 or 14:4

Thus new ratio is F:W:S = 14:4:4 or 7:2:2

That is, the ratio of water and sugar is same. So if there are 8 cups of water there should be 8 cups of sugar!
Intern
Intern
User avatar
B
Joined: 10 Dec 2015
Posts: 26
GMAT 1: 680 Q45 V38
The ratio of flour to water to sugar in a recipe is 7:4:1.  [#permalink]

Show Tags

New post 16 Jan 2018, 13:43
Initial:
Flour(F):Water(W):Sugar(S)=7:4:1
Now, let's separate the ratios for convenience.
F:W=7:4 ; F:S=7:1
Now, bring both ratios to the same denominator by multiplying,
F:W=7:4 ; F:S=28:4
Now, quantity of F in F:W is doubled,
F:W=14:4
Now, quantity of F in F:S is halved,
F:S=14:4

Since the denominators are equal, we can write the new ratio together as,
F:W:S=14:4:4

We see that water and sugar are both in equal quantities in the ratio. Hence, if we add 8 cups of water, we have to add 8 cups of sugar too.
ANS. C
_________________
-Please give me KUDOS, if my posts help you in anyway.
-Please PM me any doubts which you might have, and I will do my level best to help. :)
Director
Director
avatar
G
Joined: 09 Mar 2018
Posts: 994
Location: India
Re: The ratio of flour to water to sugar in a recipe is 7:4:1.  [#permalink]

Show Tags

New post 06 Feb 2019, 11:16
3111987 wrote:
The ratio of flour to water to sugar in a recipe is 7:4:1. The ratio in a new recipe calls for a doubling of the ratio of flour to water from the original recipe and a halving of the ratio of flour to sugar. If the new recipe calls for 8 cups of water, how much sugar is required?

(A) 4 cups
(B) 6 cups
(C) 8 cups
(D) 12 cups
(E) 16 cups


F:W:S = 7:4:1

F/W = 14/4(doubling ) W/F = 4/14

F/S = 7/2(halving )(multiply both numerator and denominator by 2)

F/S = 14/4

Tally the ratios W:F:S = 4:14:4

So multiply the above ratio by 2

how much sugar is required => 8 cups
_________________
If you notice any discrepancy in my reasoning, please let me know. Lets improve together.

Quote which i can relate to.
Many of life's failures happen with people who do not realize how close they were to success when they gave up.
Target Test Prep Representative
User avatar
D
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8117
Location: United States (CA)
Re: The ratio of flour to water to sugar in a recipe is 7:4:1.  [#permalink]

Show Tags

New post 06 Jul 2019, 18:05
3111987 wrote:
The ratio of flour to water to sugar in a recipe is 7:4:1. The ratio in a new recipe calls for a doubling of the ratio of flour to water from the original recipe and a halving of the ratio of flour to sugar. If the new recipe calls for 8 cups of water, how much sugar is required?

(A) 4 cups
(B) 6 cups
(C) 8 cups
(D) 12 cups
(E) 16 cups


The original ratio is F : W : S = 7 : 4 : 1

Doubling the flour to water ratio gives us F: W = 14 : 4 = 7 : 2.

Halving the flour to sugar ratio gives us F : S = 3.5 : 1 = 7 : 2.

In the new recipe (or ratio), we see that water and sugar must be the same amount. Therefore, if the new recipe calls for 8 cups of water, we also need 8 cups of sugar.

Answer: C
_________________

Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

GMAT Club Bot
Re: The ratio of flour to water to sugar in a recipe is 7:4:1.   [#permalink] 06 Jul 2019, 18:05
Display posts from previous: Sort by

The ratio of flour to water to sugar in a recipe is 7:4:1.

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





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