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A certain x-liter solution, contains twice as much water as oil and fo

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A certain x-liter solution, contains twice as much water as oil and fo  [#permalink]

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New post 04 Apr 2017, 03:39
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A certain x-liter solution, contains twice as much water as oil and four times as much oil as vinegar, what is x?

(1) The solution contains 5 liters of oil.
(2) The solution contains 800/13 percent water.

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Re: A certain x-liter solution, contains twice as much water as oil and fo  [#permalink]

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New post 04 Apr 2017, 11:23
stat 1 : clearly suff,, given content of oil..
hence vinegar can be found out,, water also can be found out

stat 2 : given in terms of percentage,,, not suff..

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Re: A certain x-liter solution, contains twice as much water as oil and fo  [#permalink]

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New post 12 May 2017, 21:52
1
Let the solution contains v liters of vinegar.
therfore oil = 4 (v) [from prompt ]
and w = 2(o) [from prompt]

Statement 1: oil = 5 liters
therfore water = 10 liters and v = 5/4 = 1.25 liters hence can calculate the value of x = 1.25 + 5 + 10 = 16.25 liters.

Statement 2 : solution contain 60 % water , 40 % vinegar and oil .
but we do not have any concrete value for any of the one variables hence cannot find the value of x.
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Re: A certain x-liter solution, contains twice as much water as oil and fo  [#permalink]

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New post 06 Feb 2018, 04:02
1
Bunuel wrote:
A certain x-liter solution, contains twice as much water as oil and four times as much oil as vinegar, what is x?

(1) The solution contains 5 liters of oil.
(2) The solution contains 60 percent water.



Hi Bunuel, from statement 2 I obtain something like this : since the ratio of oil to water to vinegar is 4x:8x:x and statement 2 states "water = 0.6 total " we can write

8x = 0.6 * 13x

which is never verified for any x unless x= 0 ...so I think this statement contradicts the first 1 somehow? something should never happen in a DS question even if the statement is not sufficient by himself...? Also if you calculate the % of water in the solution from 1) , it is not 60%.....

Thanks
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Re: A certain x-liter solution, contains twice as much water as oil and fo  [#permalink]

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New post 06 Feb 2018, 04:34
teone83 wrote:
Bunuel wrote:
A certain x-liter solution, contains twice as much water as oil and four times as much oil as vinegar, what is x?

(1) The solution contains 5 liters of oil.
(2) The solution contains 60 percent water.



Hi Bunuel, from statement 2 I obtain something like this : since the ratio of oil to water to vinegar is 4x:8x:x and statement 2 states "water = 0.6 total " we can write

8x = 0.6 * 13x

which is never verified for any x unless x= 0 ...so I think this statement contradicts the first 1 somehow? something should never happen in a DS question even if the statement is not sufficient by himself...? Also if you calculate the % of water in the solution from 1) , it is not 60%.....

Thanks


You are right. Edited the second statement to fix this issue.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

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Re: A certain x-liter solution, contains twice as much water as oil and fo &nbs [#permalink] 06 Feb 2018, 04:34
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A certain x-liter solution, contains twice as much water as oil and fo

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