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Comment on Word Problems with Fractions
hi, I did it that way
since 2/5=28 then 1/5 =14
therefore. 14*5=70
would that be sufficient for the similar questions?
Thanks
You're referring to the
You're referring to the question at 2:20 in the video.
Yes, your calculations are correct. However, so that others can understand your rationale, we need to add a variable.
Let x = total number of students
So, 2/5 of x = number of boys
So, 2/5 of x = 28
We can conclude that 1/5 of x = 14
So, x = (5)(14) = 70
Would it not be simpler to
Thank you
Sorry, I'm not 100% sure what
Sorry, I'm not 100% sure what you're asking.
Can you please elaborate?
In the meantime, I should mention that using 1/3 instead of 0.3 will yield an value that's CLOSE to the value you're looking for.
However, since 1/3 is a little bit greater than 0.3, this is not necessarily the best alternative.
That's all I'll say about that. I'll wait for further information from you first.
Cheers,
Brent
http://gre.myprepclub.com/forum
Please explain this for me. I couldn't grasp the explanation on the module
Question link: http:/
Question link: http://gre.myprepclub.com/forum/a-satellite-is-composed-of-30-modular-un...
Did you see my solution at https://gre.myprepclub.com/forum/a-satellite-is-composed-of-30-modular-u...?
If so, can you tell me where you're having difficulties?
Cheers,
Brent
Hello Brent,
Please can you explain a little more the following question, https://gre.myprepclub.com/forum/a-satellite-is-composed-of-30-modular-units-each-of-which-2717.html
Thank you
Question link: https:/
Question link: https://gre.myprepclub.com/forum/a-satellite-is-composed-of-30-modular-u...
Tricky question!
Here's my algebraic solution: https://gre.myprepclub.com/forum/a-satellite-is-composed-of-30-modular-u...
Please let me know if that helps.
Cheers,
Brent
Hi!
Can you please explain this question.
https://gre.myprepclub.com/forum/kelly-took-three-days-to-travel-from-city-a-to-city-b-by-aut-3387.html
Here's my full solution:
Here's my full solution: https://gre.myprepclub.com/forum/kelly-took-three-days-to-travel-from-ci...
Hi Brent, I am having trouble
I see your solution but cannot fully grasp the problem as it is presented. Is there a visual representation that you could display or maybe use terms more familiar than satellites and modules so that I can understand the way the satellites and modules are compartmentalized?
Thank you.
Great idea!
Great idea!
Here you go: https://gre.myprepclub.com/forum/a-satellite-is-composed-of-30-modular-u...
Cheers, Brent
Hi Brent,
I am little confused when we calculate the fraction of the money,
for example in the question : vashti received a gift of 36$...
here you have calculated every fraction *36$
But , there are some questions for example
1/4 *36=9$ and ther subtract this 9$ from the 36$ and are moving ahead . So my question is how could we know which process need to be followed.
ThanK You
Questions that require you to
Questions that require you to first subtract a fractional amount before continuing will typically feature the word REMAINING.
Here's an example:
Joe has $60. If Joe spends 1/5 of his money on lunch, and then spends 1/3 of his REMAINING money on dinner, how much money does Joe have left?
Solution: 1/5 of $60 = $12 ($12 spent on lunch)
$60 - $12 = $48 (Joe has $48 REMAINING)
1/3 of $48 = $16 ($16 spent on dinner)
Amount of money left = $48 - $16 = $32
Answer: Joe has $32 left.
Does that help?
Thank you that really hepled
I don't understand both the
The satellite question: https
The satellite question: https://gre.myprepclub.com/forum/a-satellite-is-composed-of-30-modular-u...
This question is CRAZY difficult (only 28% correct!).
I've provided three different solutions to the satellite question. Have you had a chance to review all three solutions?
If so, can you tell me where I lost you?
The Kelly question: https://gre.myprepclub.com/forum/kelly-took-three-days-to-travel-from-ci...
Did your review my solution?
I'm happy to elaborate on any points. Just tell me what you would like me to elaborate on.
Cheers,
Brent
The satellite question I got
Let's look at the solution in
Let's look at the solution in which I assigned a NICE VALUE to the number of upgraded sensors.
GIVEN: The number of non-upgraded sensors on one modular unit is 1/5 the TOTAL number of upgraded sensors on the entire satellite
In other words: (# of non-upgraded sensors on ONE modular unit) = (1/5)(total # of upgraded sensors on the entire satellite)
So, let's say there's a TOTAL of 5 upgraded sensors on the entire satellite.
This means: (# of non-upgraded sensors on ONE modular unit) = (1/5)(5) = 1
Since there are 30 modular units altogether, the TOTAL number of non-upgraded sensors = (30)(1) = 30.
So, the TOTAL number of sensors = (total number of non-upgrades) + (total number of upgraded)
= 30 + 5
= 35
What fraction of the sensors on the satellite have been upgraded?
= 5/35
= 1/7
----------------------------------
Now let's examine the solution in which I assigned a VARIABLE to the number of upgraded sensors.
GIVEN: The number of non-upgraded sensors on one modular unit is 1/5 the TOTAL number of upgraded sensors on the entire satellite
In other words: (# of non-upgraded sensors on ONE modular unit) = (1/5)(total # of upgraded sensors on the entire satellite)
So, let's say x = the TOTAL number of upgraded sensors on the entire satellite.
This means: (# of non-upgraded sensors on ONE modular unit) = (1/5)(x) = x/5
Since there are 30 modular units altogether, the TOTAL number of non-upgraded sensors = (30)(x/5) = 6x
So, the TOTAL number of sensors = (total number of non-upgrades) + (total number of upgraded)
= 6x + x
= 7x
What fraction of the sensors on the satellite have been upgraded?
We have 7x sensors and x of them have been upgraded
= x/7x = 1/7
Does that help?
Cheers,
Brent
Yes that helped and for the
The first step in that
The first step in that solution was to assign a "nice" value to the total distance.
So, I let the TOTAL distance = 1 mile
This allows us to create the following word equation:
(distance traveled on Day 1) + (distance traveled on Day 2) + (distance traveled on Day 3) = 1 mile
From here, it's just a matter of plugging values into the first two sets of brackets.
Earlier in the solution we found that:
- Distance traveled on Day 1 = 2/5 miles
- Distance traveled on Day 2 = 2/3(1 - 2/5) miles
We can now substitute values into our word equation....
We get: (2/5) + [2/3(1 - 2/5)] + (distance traveled on Day 3) = 1
Subtract 2/5 from both sides of the equation: [2/3(1 - 2/5)] + (distance traveled on Day 3) = 1 - 2/5
Subtract [2/3(1 - 2/5)] from both sides of the equation: (distance traveled on Day 3) = 1 - 2/5 - [2/3(1 - 2/5)]
Answer: D
Does that help?
Hey i have a basic question..
what i did was that i found 12 from 1/3 * 36 but than subtracted 12 from 36 and than did 5/9 fraction but that,s not how u did it can u please explain why did u take total and not my way?
The wording of the question
The wording of the question tells us that Vashti spent 1/3 of her $36 at a movie, 5/9 of her $36 on a hat, and the remaining money on candy.
In order to interpret the given information the way you have interpreted it, the question would need to be worded as follows:
Vashti received a gift of $36. She spent 1/3 of her money at a movie, 5/9 OF HER REMAINING MONEY on a hat, and the remainder on candy.