Aug 23 08:00 PM PDT  10:00 PM PDT Get Magoosh's App for Free Questions, Free Video lessons, and more. Aug 25 09:00 PM PDT  10:00 PM PDT Target Test Prep is giving 10 lucky winners 4 months of FREE access to our toprated GRE Quant course. Our giveaway contest is open for 10 days only, so enter today for your chance to levelup your prep! Aug 26 08:00 PM PDT  09:00 PM PDT 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. Aug 26 08:00 PM PDT  11:00 PM PDT Learn how to evaluate your profile, skills, and experiences to determine if, when, and where you should apply to graduate school. Aug 28 08:00 PM PDT  11:00 PM PDT 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. Aug 30 08:00 PM PDT  09:00 PM PDT 7+ POINT GRE SCORE IMPROVEMENT GUARANTEE Sep 01 08:00 PM PDT  09:30 PM PDT Whether you want to take a free practice test, attend a deepdive session about the test itself, or experience the power of live instruction, we’ve got you covered.
Author 
Message 
TAGS:


GRE Prep Club Legend
Joined: 07 Jun 2014
Posts: 4809
WE: Business Development (Energy and Utilities)
Followers: 128
Kudos [?]:
2046
[0], given: 397

Fiber X cereal is 55% fiber. Fiber Max cereal is 70% fiber. [#permalink]
29 Aug 2018, 16:18
Question Stats:
49% (01:18) correct
49% (02:29) wrong based on 14 sessions
Fiber X cereal is 55% fiber. Fiber Max cereal is 70% fiber. Sheldon combines an amount of the two cereals in a single bowl of mixed cereal that is 65% fiber. If the bowl contains a total of 12 ounces of cereal, how much of the cereal, in ounces, is Fiber X? (A) 3 (B) 4 (C) 6 (D) 8 (E) 9
_________________
Sandy If you found this post useful, please let me know by pressing the Kudos Button
Try our free Online GRE Test




Manager
Joined: 29 Nov 2017
Posts: 190
Location: United States
WE: Information Technology (Computer Software)
Followers: 1
Kudos [?]:
80
[0], given: 99

Re: Fiber X cereal is 55% fiber. Fiber Max cereal is 70% fiber. [#permalink]
31 Aug 2018, 02:43
I am sorry, I need have my head wraped around such type of question. would highly appriciate is someone can share a link to a video link to these type of questions.
Can somebody please explain it here.
Thanks in advance.



Intern
Joined: 10 Aug 2018
Posts: 29
Followers: 1
Kudos [?]:
6
[0], given: 2

Re: Fiber X cereal is 55% fiber. Fiber Max cereal is 70% fiber. [#permalink]
31 Aug 2018, 21:50
https://www.youtube.com/watch?v=kDyhz6d ... AQ0ZvOB88z Link for alligation and mixtures. the above question can be solved using this concept



Intern
Joined: 22 Jul 2018
Posts: 41
Followers: 0
Kudos [?]:
12
[0], given: 5

Re: Fiber X cereal is 55% fiber. Fiber Max cereal is 70% fiber. [#permalink]
15 Oct 2018, 09:56
Use the weighted average formula to get the ratio of Fiber X to Fiber Max: [0.55X+0.70m][/x+m] = 0.65 where x is the amount of Fiber X and m is the amount of Fiber Max. This is not that different from the regular average formula—on the top, there is the total amount of fiber (55% of Fiber X and 70% of Fiber Max), which is divided by the total amount of cereal (x + m) to get the average. Simplify by multiplying both sides by (x + m): 0.55x + 0.70m = 0.65(x + m) 0.55x + 0.70m = 0.65x + 0.65m To simplify, multiply both sides of the equation by 100 to eliminate all the decimals: 55x + 70m = 65x + 65m 55x + 5m = 65x 5m = 10x m/x= 1/2 Since m and x are in a 2 to 1 ratio, 2/3 of the total is m and 1/3 of the total is x. Since the total is 12 ounces, Fiber X accounts for (12) = 4 ounces of the mixed cereal.



Intern
Joined: 22 Jul 2018
Posts: 41
Followers: 0
Kudos [?]:
12
[0], given: 5

Re: Fiber X cereal is 55% fiber. Fiber Max cereal is 70% fiber. [#permalink]
15 Oct 2018, 09:56
One shortcut to this procedure is to note that the weighted average (65%) is 10% away from Fiber X’s percent and 5% away from Fiber Max’s percent. Since 10 is twice as much as 5, the ratio of the two cereals is 2 to 1. However, it is a 2




Re: Fiber X cereal is 55% fiber. Fiber Max cereal is 70% fiber.
[#permalink]
15 Oct 2018, 09:56





