Brutal SC - 51

Expert replies

nehakhas1: Senior | Next Rank: 100 Posts; Posts: 39; Joined: Wed Oct 15, 2008 11:25 amFollowed by: 1 member

by nehakhas1 » Wed Jul 08, 2009 7:23 am

51. In his experiments with gravity, Isaac Newton showed how the motion of each planet in the solar system results from the combined gravitational pull of the Sun and of all the other planets, each contributing according to their mass and distance from the others.

A. of all the other planets, each contributing according to their
B. of all the other planets, with each of them contributing according to their
C. all the other planets, each of which contributing according to its
D. all the other planets, each contributing according to its
E. all the other planets, each of which contribute according to their

Ans : a

Source: Beat The GMAT — Sentence Correction | Wed Jul 08, 2009 7:23 am

madhur_ahuja: Master | Next Rank: 500 Posts; Posts: 435; Joined: Sat May 02, 2009 3:55 am; Thanked: 17 times

by madhur_ahuja » Wed Jul 08, 2009 7:45 am

To main parallelism, we require
combined gravitational pull of the Sun and of .....

Hence C,D and E ar out.

Out of A and B, both are correct.
In B - each of them - them points to planets of the previous clause.

In A - each is directly modifying planets in previous clause .. and hence is concise.

Hence A

dumb.doofus: Master | Next Rank: 500 Posts; Posts: 435; Joined: Sat Sep 27, 2008 2:02 pmFollowed by: 1 member; Location: San Jose, CA; Thanked: 43 times; GMAT Score:720

by dumb.doofus » Wed Jul 08, 2009 8:23 am

I don't think A is correct. From where did you get the question and the answer? I highly doubt it.

Its a 3:2 split between "of all the other planets" and "all the other planets"

We already have "of the sun" and that is not required to be repeated again.. so I would eliminate A and B straight away.
One more reason for eliminating A and B is because of the use of each (singular) and them, their (plural).. so A and B are clearly out..

E is also out based upon similar reasoning.. each and their..

Between C and D.. D is most concise..

Hence I would go for D.

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gmat740: MBA Student; Posts: 1194; Joined: Sat Aug 16, 2008 9:42 pmFollowed by: 17 members; Location: Paris, France; Thanked: 71 times; GMAT Score:710

by gmat740 » Wed Jul 08, 2009 9:54 am

Hey what is this??

Please use spoilers for answers

Pedros: Senior | Next Rank: 100 Posts; Posts: 40; Joined: Thu Mar 26, 2009 3:02 pm; Thanked: 3 times; GMAT Score:410

re:

by Pedros » Wed Jul 08, 2009 11:00 am

am between C and D

Is there a difference in meaning between { each } and { each of which } ?

Mayur Sand: Master | Next Rank: 500 Posts; Posts: 166; Joined: Fri Apr 03, 2009 11:16 pm; Location: India

by Mayur Sand » Wed Jul 08, 2009 11:34 am

what is the OA?

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by uptowngirl92 » Thu Oct 22, 2009 3:36 am

i dont understand this one.
far as i know,
sun & all planets --> plural
plural + each should be followed by a plural verb. why do we have "it" instead of "their" ???

The brutal SC doc. has the answer as A but you guys are saying its D.please explan!!

Shawshank: Master | Next Rank: 500 Posts; Posts: 305; Joined: Mon Jul 27, 2009 5:38 am; Thanked: 10 times

by Shawshank » Thu Oct 22, 2009 4:49 am

IMO -- D.

Even i dont think "A" is correct.

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disputedbug: Newbie | Next Rank: 10 Posts; Posts: 2; Joined: Fri Aug 24, 2007 4:24 am; Location: Bangalore

by disputedbug » Thu Apr 29, 2010 1:32 am

IMHO D.

FightWithGMAT: Master | Next Rank: 500 Posts; Posts: 364; Joined: Tue Apr 20, 2010 5:13 amFollowed by: 3 members; Thanked: 31 times

by FightWithGMAT » Thu Apr 29, 2010 6:14 am

IMO D

Last edited by FightWithGMAT on Fri Jul 30, 2010 1:30 am, edited 1 time in total.

hariharakarthi: Master | Next Rank: 500 Posts; Posts: 131; Joined: Tue Apr 22, 2008 1:54 pm; Thanked: 3 times; GMAT Score:550

by hariharakarthi » Thu Apr 29, 2010 6:47 am

IMO D.

all the other planets, each contributing according to their mass and distance from the others.

The underlined section is a modifier that modifies all the other plants.

In this phrase, each planet is the subject of the phrase. I think when we have Each as subject of phrase/sentence then we need to have singular pronoun. Hence D is correct.

Correct me, if I am wrong.
Experts help would help us on this.

rgds,
hhk.

Regards,
hhk

bichoo: Senior | Next Rank: 100 Posts; Posts: 48; Joined: Mon Dec 07, 2009 3:18 pm

by bichoo » Thu Apr 29, 2010 8:54 am

IMO D as well. If OA is indeed A, expert explanation is needed here

amneetpadda: Newbie | Next Rank: 10 Posts; Posts: 6; Joined: Thu Jul 29, 2010 1:49 pm

by amneetpadda » Thu Jul 29, 2010 1:50 pm

OA is D and not A please check brutal SC in that case...!!!

ssgmatter: Legendary Member; Posts: 549; Joined: Wed Jan 06, 2010 7:00 amFollowed by: 3 members; Thanked: 16 times

by ssgmatter » Tue Sep 14, 2010 11:59 pm

OA is A

Best-
Amit

diebeatsthegmat: Legendary Member; Posts: 1119; Joined: Fri May 07, 2010 8:50 amFollowed by: 3 members; Thanked: 29 times

by diebeatsthegmat » Mon Sep 20, 2010 11:01 am

nehakhas1 wrote:51. In his experiments with gravity, Isaac Newton showed how the motion of each planet in the solar system results from the combined gravitational pull of the Sun and of all the other planets, each contributing according to their mass and distance from the others.

A. of all the other planets, each contributing according to their
B. of all the other planets, with each of them contributing according to their
C. all the other planets, each of which contributing according to its
D. all the other planets, each contributing according to its
E. all the other planets, each of which contribute according to their

Ans : a[/quote

the answer should be D instead of A
"their" in A is not good with " each" and we dont need more of
the answer is wrong 100%

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