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DS OG 13th 105 problem

This topic has 2 expert replies and 2 member replies
sohailmbaprep Senior | Next Rank: 100 Posts Default Avatar
Joined
23 Feb 2012
Posted:
59 messages

DS OG 13th 105 problem

Post Sat Sep 15, 2012 12:06 am
Material A costs $3 /kg ,and MAterial B costs $5/kg .If 10Kg of material K consists of X kilograms of Material A and y Kg of Material B,is x>y ?
1) y>4
2) the cost of the 10kg of material K is less than $40.

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Post Wed Jul 24, 2013 7:41 pm
Hi sarawutc,

The two Facts/statements in DS questions will NOT be contradictory, but one of them may contain "options" that the other does not.

In this question:

Fact 1 tells us that y > 4
Fact 2 tells us that y < 5

While your first reaction might be to call these two Facts contradictory, they're not....

IF you were dealing with a DS question that required you to Combine Facts, then there will be at least one possible answer (it's just that sometimes there's more than 1 answer and you're responsible to find those possibilities).

In this case, y could = 4.01, 4.5, 4.999999, etc.

GMAT assassins aren't born, they're made,
Rich

_________________
Contact Rich at Rich.C@empowergmat.com

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sarawutc Newbie | Next Rank: 10 Posts
Joined
31 Mar 2013
Posted:
5 messages
Top Reply
Post Wed Jul 24, 2013 11:55 am
Hi Experts,
I have one question as for this question.
The two statements are contradictory right ?
I thought we wouldn't confront this situation in GMAT though.

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Post Wed Jul 24, 2013 7:41 pm
Hi sarawutc,

The two Facts/statements in DS questions will NOT be contradictory, but one of them may contain "options" that the other does not.

In this question:

Fact 1 tells us that y > 4
Fact 2 tells us that y < 5

While your first reaction might be to call these two Facts contradictory, they're not....

IF you were dealing with a DS question that required you to Combine Facts, then there will be at least one possible answer (it's just that sometimes there's more than 1 answer and you're responsible to find those possibilities).

In this case, y could = 4.01, 4.5, 4.999999, etc.

GMAT assassins aren't born, they're made,
Rich

_________________
Contact Rich at Rich.C@empowergmat.com

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sarawutc Newbie | Next Rank: 10 Posts
Joined
31 Mar 2013
Posted:
5 messages
Post Wed Jul 24, 2013 11:55 am
Hi Experts,
I have one question as for this question.
The two statements are contradictory right ?
I thought we wouldn't confront this situation in GMAT though.

  • +1 Upvote Post
  • Quote
  • Flag

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