GMAT confusions ...

[sonusinghal]

) When to use 'percent' and percentage ?

As in
coal accounts to 65 percentage of China's energy resources
Coal accounts to 65 percent of China's energy resources

2) Idiom

Assistance for ... ?
Assistance of?

3) Is there a plural for population ? I mean populations .. is it correct ? We found a sentence where populations was correct .. Not sure if it is correct
Q 10 , V 4.4 QLT 2

4) When to use WHO and WHOM

eg IT is he who/whom I want to talk with.



5) Give a sentence where the usage is correct for the idioms :
IDIOM : go out / go with
look over

distinguish between / among
as compared to /. with

Please clarify my below doubts

Thanks

Sonu

[gmat740]

When to use 'percent' and percentage ?

plural percent a : one part in a hundred b : PERCENTAGE (a large percent of his income)

You can look the link below to know more

https://mathforum.org/library/drmath/view/61067.html

3) Is there a plural for population ? I mean populations .. is it correct ? We found a sentence where populations was correct .. Not sure if it is correct

Population is a collective noun and hence it has to be singular.
Never Heard of anything like populations

When to use WHO and WHOM

Who==> Subjective Case

Whom ==> Objective case

IT is he who/whom I want to talk with.
ans: whom

There is a detailed discussion on this, just one line won't suffice

distinguish between / among

Between when two things are compared
Among= more than 2 things

compared to /. with

compared to : Comparison of unlike things for similarity.
compared with : Comparison of like things for dissimilarity.



Hope this helps

Karan

[nasa]

Compare to compares UNLIKE things to stress resemblance.
Compare with compares LIKE things to show similarity or difference (mostly difference).

Eg:
He compared her to a summer day
The police officer compared the forged signature with the original.

Source: free-gmat-flashcards.pdf from www.beatthegmat.com