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

 It is currently 08 Dec 2019, 16:53

### 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

# A certain cooking oil is composed of olive, canola and grapeseed oils

Author Message
TAGS:

### Hide Tags

Manager
Joined: 03 Jul 2017
Posts: 67
Location: India
Concentration: Finance, Economics
GPA: 3.4
A certain cooking oil is composed of olive, canola and grapeseed oils  [#permalink]

### Show Tags

28 Nov 2017, 12:41
2
00:00

Difficulty:

45% (medium)

Question Stats:

66% (02:05) correct 34% (02:37) wrong based on 59 sessions

### HideShow timer Statistics

A certain cooking oil is composed of olive, canola and grapeseed oils in a ratio of 1:11:22 by weight. If the ratio of olive oil to canola oil is tripled while the ratio of olive oil to grapeseed oil stays the same, what fraction of the new oil will be canola oil?

A. $$\frac{9}{80}$$
B. $$\frac{9}{69}$$
C. $$\frac{11}{80}$$
D. $$\frac{11}{69}$$
E. $$\frac{11}{25}$$
Senior SC Moderator
Joined: 22 May 2016
Posts: 3730
A certain cooking oil is composed of olive, canola and grapeseed oils  [#permalink]

### Show Tags

28 Nov 2017, 13:51
2
abansal1805 wrote:
A certain cooking oil is composed of olive, canola and grapeseed oils in a ratio of 1:11:22 by weight. If the ratio of olive oil to canola oil is tripled while the ratio of olive oil to grapeseed oil stays the same, what fraction of the new oil will be canola oil?

A. $$\frac{9}{80}$$
B. $$\frac{9}{69}$$
C. $$\frac{11}{80}$$
D. $$\frac{11}{69}$$
E. $$\frac{11}{25}$$

Original ratio is
O : C : G
1 : 11: 22

The ratio of Olive : Canola is tripled.

$$(\frac{Olive}{Canola} = \frac{1}{11} * 3) = (\frac{3olive}{11canola})=\frac{3}{11}$$

Ratio of Grapeseed : Olive stays the same. The ratio is $$\frac{G}{O} = \frac{22}{1}$$

But now there are 3 parts olive oil. We need more grapeseed oil to maintain the ratio:

$$\frac{22G}{(1)O}=\frac{(x)G}{(3)O}=\frac{66G}{(3)O}=\frac{66}{3}$$

Either: Olive, denominator, was multiplied by 3 (1*3--> 3), so do the same to numerator with grapeseed (22*3--> 66), OR

$$\frac{22G}{(1)O}=\frac{x}{3}$$
$$x = (22*3) = 66$$

New ratio among parts
O : C : G
3 : 11: 66

What fraction of the new oil will be canola oil?

$$\frac{C}{(O+C+G)}$$

Total parts: (O + C + G) = 80
Canola = 11

$$\frac{11}{80}$$

_________________
SC Butler has resumed! Get two SC questions to practice, whose links you can find by date, here.

Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it's the only thing that ever has -- Margaret Mead
LBS Moderator
Joined: 04 Jun 2018
Posts: 664
Location: Germany
Concentration: General Management, Finance
GMAT 1: 730 Q47 V44
GPA: 3.4
WE: Analyst (Transportation)
Re: A certain cooking oil is composed of olive, canola and grapeseed oils  [#permalink]

### Show Tags

25 May 2019, 02:51
For me, this question was almost RC, as understanding what to calculate was harder than the actual math itself.
_________________
Re: A certain cooking oil is composed of olive, canola and grapeseed oils   [#permalink] 25 May 2019, 02:51
Display posts from previous: Sort by