Search found 17 matches


Re: Practice Quant problem

For this question we have to know the following:
( x + y )^2 = x^2 + 2xy + y^2
( x - y )^2 = x^2 - 2xy + y^2
2^x / 2^x - 2 = 2^(x-(x-2)) = 2^2
Moving to the problem
2^(x^2 + 2xy + y^2) / 2^(x^2 - 2xy + y^2) = 2^4xy
We know xy = 1
So, 2^4(1) = 2^4 = 16.
Correct answer is D.

by PhillipZhang87

Fri Sep 18, 2020 7:03 am
Forum: GMAT Math
Topic: Practice Quant problem
Replies: 3
Views: 5054

Re: The human nervous system and a telephone system superficially resemble each other, not only because the former carri

A / E can be eliminated because of improper usage of correlative conjuction not only , and B can be eliminated because of faulty Parallelism as because should be after both. D misplaced modifier superficially as well as, they refers to both the nuervous system and telephone system when we just want ...


Re: Science and observation indicate that auroras, such as those seen in the Arctic and Antarctic, appears in various

Subject verb agreement gets rid of A / B need to use appear for plural subject auroras.
C is preferrable to D since we need to use essential modifier that as we want to say that the configurations are shaped by the earth's magnetic field.
Therefore, correct answer is C.


Re: The global-warming effect of ocean white caps are one of the many aspects of the ocean environment that are not yet

This question is mainly testing Subject Verb Agreement. One of the many aspects refers to the global warming effect and not the ocean white caps and therefore, we need to use is instead of are. Eliminates A/B for D / E having been / being incorporated is redundant and incorrect. Therefore, answer is...


Re: Japan has a land area similar to California but fully 128 million in population, where 23% are over the age of 65,

This question tests comparison only C , E have the correct comparison b/w Japan's land area and California land area. E is preferred as when we refer to people whom is preferred to them as well as, the in Japan in C is redundant.
Therefore, correct answer is C.


Re: speed time and distance

So, we know that Rohan would be 16 minutes late if Shikha doesn't leave the house. Therefore, by her leaving they save 16 minutes. the rate that he is going is 60 km/hr so 16 minutes means that by her leaving it reduces the distance Rohan has to travel by 16 km. Since the venue and Shikha house is i...

by PhillipZhang87

Fri Sep 18, 2020 5:40 am
Forum: GMAT Math
Topic: speed time and distance
Replies: 1
Views: 5712

Re: Problem Solving Question

The best approach for a lot of algebra questions like these is to definitely to pick numbers and think logically. I r/s we know 0< numerator < 1 as well as, 1 < denominator < 2 so the answer definitely be less than 1. II rs choose r = 0.2 s = 1.1 rs = 0.22 < 1 so not the case III s - r choose r = 0....

by PhillipZhang87

Fri Sep 18, 2020 5:28 am
Forum: GMAT Math
Topic: Problem Solving Question
Replies: 4
Views: 7249

Re: If 9 marbles were added to a jar of marbles, the number of marbles would be greater than 3 times the original number

x+9 = 3x
x = 4.5
Therefore x < 4.5 so that it's over 3x the original marble so answer is C.
Alternatively, you could just add 9 to the solutions and find the lowest answer that is three times the original solution.


Re: Vocabulary

As most have mentioned vocabulary isn't directly tested however, obviously increasing your vocabulary through reading articles and books would be pivotal towards success in verbal.

by PhillipZhang87

Tue Sep 15, 2020 5:47 pm
Forum: GMAT Verbal & Essays
Topic: Vocabulary
Replies: 10
Views: 12027

Re: Mixture replacement Problems:How to solve effectively and q

Water: Milk: Total
20: 80: 100 Original Porportion
15: 60: 75 3/4 * Original Porportion
40 : 60: 100 New porportion
2: 3 : 5

by PhillipZhang87

Tue Sep 15, 2020 3:41 pm
Forum: GMAT Math
Topic: Mixture replacement Problems:How to solve effectively and q
Replies: 7
Views: 7312

Re: AWA practice

Overall good essay! The essay was well - reasoned, argument was presented clear and concise, and you utilized transition words properly.

by PhillipZhang87

Tue Sep 15, 2020 3:28 pm
Forum: GMAT Essays (AWA)
Topic: AWA practice
Replies: 6
Views: 1634

Re: How to improve from V37 to v40+

If your looking for high quality reading material then the Economist is pretty good. It has a broad range of topics as well as, the articles are eloquent and well-written.

by PhillipZhang87

Tue Sep 15, 2020 3:24 pm
Forum: GMAT Verbal & Essays
Topic: How to improve from V37 to v40+
Replies: 6
Views: 5589