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According to the directions on a can of frozen orange juice [#permalink]

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23 Sep 2010, 12:53

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According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3 cans of water to make an orange juice. How many 12 ounce cans of concentrate are required to prepare 200 6-ounce servings of orange juice.

According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3 cans of water to make an orange juice. How many 12 ounce cans of concentrate are required to prepare 200 6-ounce servings of orange juice. 25 34 50 67 100.

This is a Gmat prep question. I dont know how to attach wrong answers in gmat prep to this forum. Please help

\(\frac{concentrate}{juice}=\frac{1}{4}\), as 1 part of concentrate is to be mixed with 3 parts of water to get 4 parts of juice;

200 6-ounce of orange juice = 100 12-ounce of orange juice;

As 1/4 th 100 12-ounce of orange juice must be concentrate --> 100*1/4=25 12-ounce of cans of concentrate are required.

According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3 cans of water to make orange juice. How many 12-ounce cans of the concentrate are required to prepare 200 6-ounce servings of orange juice? a)25 b)34 c)50 d)67 e)100

We need concentrate:water in 1:3 ratio.

We need to prepare 200 x 6-ounce servings or 1200 ounces Let there be x ounces of concentrate and hence 3x ounces of water

I'm surprised I got this right...here's how I approached this. X can concentrate : 3X can water is given as the ratio 200 cans of 6 oz each = 1200 oz total fluid.

x+3x = 1200 Therefore x=300 oz of orange juice concentrate Now we are asked how many 12 oz cans of concentrate are required. From 300, 12 goes 25 times so the answer is A

Re: According to the directions on a can of frozen orange juice [#permalink]

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21 Jun 2014, 05:55

Bunuel wrote:

TomB wrote:

According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3 cans of water to make an orange juice. How many 12 ounce cans of concentrate are required to prepare 200 6-ounce servings of orange juice. 25 34 50 67 100.

This is a Gmat prep question. I dont know how to attach wrong answers in gmat prep to this forum. Please help

\(\frac{concentrate}{juice}=\frac{1}{4}\), as 1 part of concentrate is to be mixed with 3 parts of water to get 4 parts of juice;

200 6-ounce of orange juice = 100 12-ounce of orange juice;

As 1/4 th 100 12-ounce of orange juice must be concentrate --> 100*1/4=25 12-ounce of cans of concentrate are required.

Answer: A.

Hi Bunuel,

How do we know that the can is of 12-ounce? Because its given in the last sentence that how many 12-ounce cans are required. But its not given that the can of concentrate in the mixture: (1 can of concentrate + 3cans of water) is of 12-ounce.

Please clarify.
_________________

_________________________________ Consider Kudos if helpful

According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3 cans of water to make an orange juice. How many 12 ounce cans of concentrate are required to prepare 200 6-ounce servings of orange juice. 25 34 50 67 100.

This is a Gmat prep question. I dont know how to attach wrong answers in gmat prep to this forum. Please help

\(\frac{concentrate}{juice}=\frac{1}{4}\), as 1 part of concentrate is to be mixed with 3 parts of water to get 4 parts of juice;

200 6-ounce of orange juice = 100 12-ounce of orange juice;

As 1/4 th 100 12-ounce of orange juice must be concentrate --> 100*1/4=25 12-ounce of cans of concentrate are required.

Answer: A.

Hi Bunuel,

How do we know that the can is of 12-ounce? Because its given in the last sentence that how many 12-ounce cans are required. But its not given that the can of concentrate in the mixture: (1 can of concentrate + 3cans of water) is of 12-ounce.

Please clarify.

That's true. But what the first sentence is saying is that 1 part of concentrate is to be mixed with 3 parts (thrice of that of concentrate) of water to make an orange juice. So, whatever amount of concentrate you take, you'll have to mix it with 3 times as much water.

Re: According to the directions on a can of frozen orange juice [#permalink]

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23 Jun 2014, 05:23

Bunuel wrote:

That's true. But what the first sentence is saying is that 1 part of concentrate is to be mixed with 3 parts (thrice of that of concentrate) of water to make an orange juice. So, whatever amount of concentrate you take, you'll have to mix it with 3 times as much water.

Does this make sense?

Yes Bunuel, even if we consider the can a concentrate of 4-ounce we will get the same answer.
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Re: According to the directions on a can of frozen orange juice [#permalink]

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26 Apr 2015, 06:46

Hi,

I know this might be a really simple problem for most, but I am somehow not able to understand this one. Could you someone please explain this step by step at the earliest as I taking the GMAT in a week and don't wanna commit a mistake on a simple ratio problem.

This question comes down to how you choose to organize your work and do the math (and there are several ways to approach the math, including TESTing THE ANSWERS). The individual "steps" involved aren't that tough, but you really have to stay organized to work through this question efficiently.

To start, we're given a "recipe" for making orange juice: 1 can of concentrate + 3 cans of water = 4 CANS of juice

Next, we're told that each "can" = 12 ounces. Combined with the prior info (above)....

1 can of concentrate + 3 cans of water = 4 cans of juice = 48 OUNCES of juice

We're told to make 200 6-ounce servings of juice, which is 200(6) = 1,200 ounces of juice. The question asks how many cans of CONCENTRATE are needed to get us 1,200 ounces (according to the recipe).

Since 1 can of concentrate --> 48 ounces of juice, we can do division to figure out the number of cans needed:

Re: According to the directions on a can of frozen orange juice [#permalink]

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30 Jun 2015, 00:17

Reading my answer to this question above, I realise how differently you can see a question over time (or at a different time).

So, in this case, we are told that we need 1 can of juice and 3 cans of water to make orange juice. In other words, we have 4 parts of juice, 1 of which is orange and 3 of which is water. That means that whatever the volume of the juice we will create, 25% of it will be orange and 75% will be water.

We have to create 1200 ounces of juice: 6*200. 25% of this (or 1 part out of 4) will be orange. So, 300 ounces will be orange (1200/4=300). And to find it per can: 300/12 = 25.

Re: According to the directions on a can of frozen orange juice [#permalink]

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14 Jan 2016, 08:05

How much counts for the GMAT score mixture problems? I have some difficulties to solve them, for this reason I am used to take an educated guess always. Can you recommend some sources where I can learn and make some practice?

Here is how I have solved the question. Please give me some feedback about it.

we have the ration of 1 Can of juice oncentrate, to 3 can of water; 1:3. The question asks how many 12 ounces of juice we need to 200 6 ounce servings (total of 1200); So I set the following proportion: 1:3=12:x, which gives me x=36; So I know that for every 12 ounce of concentrate, there are 26 ounces of water that make a total of 48 ounces (water + juice); Dividing 1200 by 48 I get the desired result --> 25 :D

How much counts for the GMAT score mixture problems? I have some difficulties to solve them, for this reason I am used to take an educated guess always. Can you recommend some sources where I can learn and make some practice?

Here is how I have solved the question. Please give me some feedback about it.

we have the ration of 1 Can of juice oncentrate, to 3 can of water; 1:3. The question asks how many 12 ounces of juice we need to 200 6 ounce servings (total of 1200); So I set the following proportion: 1:3=12:x, which gives me x=36; So I know that for every 12 ounce of concentrate, there are 26 ounces of water that make a total of 48 ounces (water + juice); Dividing 1200 by 48 I get the desired result --> 25 :D

hi you are correct in your approach..

An easier and less time consuming method would be.. we have to prepare 200 6-ounces of juice.. 200 6-ounces is same as 100 12-ounces, since rae concentrate is in 12 ounces can.. we also know from 1:3 ratio that the concentrate forms 1/4 of this total.. 1/4 of 100 = 25, this is the answer we are looking for..
_________________

Re: According to the directions on a can of frozen orange juice [#permalink]

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15 Jan 2016, 00:45

chetan2u wrote:

pepo wrote:

How much counts for the GMAT score mixture problems? I have some difficulties to solve them, for this reason I am used to take an educated guess always. Can you recommend some sources where I can learn and make some practice?

Here is how I have solved the question. Please give me some feedback about it.

we have the ration of 1 Can of juice oncentrate, to 3 can of water; 1:3. The question asks how many 12 ounces of juice we need to 200 6 ounce servings (total of 1200); So I set the following proportion: 1:3=12:x, which gives me x=36; So I know that for every 12 ounce of concentrate, there are 26 ounces of water that make a total of 48 ounces (water + juice); Dividing 1200 by 48 I get the desired result --> 25 :D

hi you are correct in your approach..

An easier and less time consuming method would be.. we have to prepare 200 6-ounces of juice.. 200 6-ounces is same as 100 12-ounces, since rae concentrate is in 12 ounces can.. we also know from 1:3 ratio that the concentrate forms 1/4 of this total.. 1/4 of 100 = 25, this is the answer we are looking for..

Hi chetan2u,

I got your reasoning, but with some difficulty...for sure I have to improve my ability on this kind of problems. Could you recommend me some free internet resource on which I can study these kind of problems please?

How much counts for the GMAT score mixture problems? I have some difficulties to solve them, for this reason I am used to take an educated guess always. Can you recommend some sources where I can learn and make some practice?

Here is how I have solved the question. Please give me some feedback about it.

we have the ration of 1 Can of juice oncentrate, to 3 can of water; 1:3. The question asks how many 12 ounces of juice we need to 200 6 ounce servings (total of 1200); So I set the following proportion: 1:3=12:x, which gives me x=36; So I know that for every 12 ounce of concentrate, there are 26 ounces of water that make a total of 48 ounces (water + juice); Dividing 1200 by 48 I get the desired result --> 25 :D

hi you are correct in your approach..

An easier and less time consuming method would be.. we have to prepare 200 6-ounces of juice.. 200 6-ounces is same as 100 12-ounces, since rae concentrate is in 12 ounces can.. we also know from 1:3 ratio that the concentrate forms 1/4 of this total.. 1/4 of 100 = 25, this is the answer we are looking for..

Hi chetan2u,

I got your reasoning, but with some difficulty...for sure I have to improve my ability on this kind of problems. Could you recommend me some free internet resource on which I can study these kind of problems please?

Re: According to the directions on a can of frozen orange juice [#permalink]

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12 Jun 2016, 21:40

TomB wrote:

According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3 cans of water to make an orange juice. How many 12 ounce cans of concentrate are required to prepare 200 6-ounce servings of orange juice.

A. 25 B. 34 C. 50 D. 67 E. 100

Try to bring everything in one unit of measurement. 4 cans of orange juice = 1 can of concentrate + 3 cans of water. Hence 1 can of juice contains 1 part concentrate and 3 parts water.

Required: How many 12 ounce cans of the concentrate are required to prepare 200 6 ounce servings of orange juice?

We would calculate everything in the form of 12 ounce cans. 200 6 ounce juice = 100 12 ounce juice.

For 100 12 ounce juice, 23 need (1/4)*100 cans of concentrate and (3/4)*100 cans of water. Each measuring 12 ounce

You bring up a fair point. However, the prompt does define "12-ounce can" as the 'unit of measurement' - so we're meant to infer that we're dealing with 12-ounce cans of everything. If you don't make that inference, then the question cannot be answered.

According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3 cans of water to make an orange juice. How many 12 ounce cans of concentrate are required to prepare 200 6-ounce servings of orange juice.

A. 25 B. 34 C. 50 D. 67 E. 100

Here's another approach:

The first part tells that, for every 1 can of concentrate, we can make 4 cans of juice. Let's be even more generic, for 1 volume of concentrate, we can make 4 volumes of juice.

Okay, now notice that we have a problem with the volume mismatch in the question. It involves 12-ounce cans of concentrate and 6-ounce servings. So, let's reword the question. Instead of making 200 6-ounce servings of juice, let's make 100 12-ounce servings of juice. We're still making the SAME AMOUNT OF JUICE.

We're now asking, "How many 12-ounce cans of the concentrate are required to prepare 100 12-ounce serving of orange juice?

We can solve this question using equivalent ratios.

We're comparing (volume of concentrate)/(volume of juice)