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.

Anyone who signs up for our free 7-day trial automatically gets access to one free gre practice test. When you upgrade to a full Economist GRE Tutor plan, you will have a choice of plans that offer between three and five practice exams.

Join a 4-day FREE online boot camp to kick off your GRE preparation and get you into your dream grad school in the upcoming deadlines.**Limited for the first 99 registrants.

The GRE is a standardized test that covers a broad range of quantitative and verbal topics and requires ample preparation time, so you need to be strategic about when to take it.

Target Test Prep is giving 10 lucky winners 4 months of FREE access to our top-rated GRE Quant course. Our giveaway contest is open for 10 days only, so enter today for your chance to level-up your prep!

We have a growing team of trained online experts, but much of our online GRE tutoring is delivered by a true GRE expert, MyGuru's Director of Online Tutoring, Stefan.

Free Video Modules Within each of the 16 learning modules (Geometry, Statistics, Sentence Equivalence, etc.) that comprise the course, you'll find plenty of free videos to help you make an informed purchase.

Oil, vinegar, and water are mixed in a 3 to 2 to 1 ratio to [#permalink]
17 Aug 2018, 18:39

1

This post received KUDOS

Expert's post

00:00

Question Stats:

83% (01:17) correct
16% (00:34) wrong based on 12 sessions

Oil, vinegar, and water are mixed in a 3 to 2 to 1 ratio to make salad dressing. If Larry has 8 cups of oil, 7 cups of vinegar, and access to any amount of water, what is the maximum number of cups of salad dressing he can make with the ingredients he has available, if fractional cup measurements are possible?

Re: Oil, vinegar, and water are mixed in a 3 to 2 to 1 ratio to [#permalink]
25 Feb 2019, 08:09

3

This post received KUDOS

Expert's post

sandy wrote:

Oil, vinegar, and water are mixed in a 3 to 2 to 1 ratio to make salad dressing. If Larry has 8 cups of oil, 7 cups of vinegar, and access to any amount of water, what is the maximum number of cups of salad dressing he can make with the ingredients he has available, if fractional cup measurements are possible?

(A) 12 (B) 13 (C) 14 (D) 15 (E) 16

GIVEN: oil: vinegar : water = 3 : 2 : 1

Let's first try to use ALL 8 cups of oil Take 3 : 2 : 1 and multiply all 3 parts by 8/3 to get the EQUIVALENT ratio 8 : 16/3 : 8/3 Simplify to get: 8 : 5 1/3 : 2 2/3 So, in this case, the dressing is comprised of 8 cups of oil, 5 1/3 cups of vinegar, and 2 2/3 cups of water Notice that we have enough vinegar to make this batch.

8 cups + 5 1/3 cups + 2 2/3 cups = 16 cups So, the TOTAL volume = 16 cups

IMPORTANT: Notice that 16 is the biggest answer choice. This means we need not explore what happens when we try to use ALL 7 cups on the vinegar, since the answer choices tell us that we will NOT get a value greater than 16

Answer: E

RELATED VIDEO FROM MY COURSE

_________________

Brent Hanneson – Creator of greenlighttestprep.com Sign up for my free GRE Question of the Dayemails

Re: Oil, vinegar, and water are mixed in a 3 to 2 to 1 ratio to [#permalink]
10 Mar 2019, 11:08

2

This post received KUDOS

Expert's post

Here's how I solved it: Oil is our limiting factor. We'll have plenty of vinegar and water.

If we have 8 cups of oil and we need 3 cups to make one serving of dressing, then we can make \(\frac{8}{3}\) servings of dressing total.

Each serving of dressing is 3 + 2 + 1 = 6 cups.

So if we can make \(\frac{8}{3}\) servings of dressing, and each serving is 6 cups, then we can make \(\frac{8}{3}*6 = \frac{48}{3}= 16\) cups of dressing.

Re: Oil, vinegar, and water are mixed in a 3 to 2 to 1 ratio to [#permalink]
07 Aug 2019, 18:33

1

This post received KUDOS

I did it this way. Oil is our limiting factor.

From the ratio, 3 cups of oil consumes 3 cups of other ingredients (2 cups vinegar+1cup water). So, 8 cups oil should consume 8 cups of other ingredients in total.

So, total no. of final cups equals 16 cups

greprepclubot

Re: Oil, vinegar, and water are mixed in a 3 to 2 to 1 ratio to
[#permalink]
07 Aug 2019, 18:33