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Geometry

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GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5032

Kudos [?]: 453 [0], given: 0

Location: Singapore

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16 Oct 2005, 08:50
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

This question came out in the national examination in my country for 12 year old kids. It raised an uproar among parents as they felt it was too difficult for 12 year olds.

Anyway, I thought it would be interesting to try post it since it involves geometry and GMAT does test geometry afterall.

The question is in the attachment. Enjoy!
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question.ppt [91.5 KiB]

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Director
Joined: 21 Aug 2005
Posts: 786

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16 Oct 2005, 09:20
Area(A) + Area(B) + Area(C) = 45
4+16+Area(C)=45
Area(C)=25

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Director
Joined: 14 Oct 2003
Posts: 582

Kudos [?]: 59 [0], given: 0

Location: On Vacation at My Crawford, Texas Ranch

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16 Oct 2005, 09:31
ywilfred wrote:
This question came out in the national examination in my country for 12 year old kids. It raised an uproar among parents as they felt it was too difficult for 12 year olds.

Anyway, I thought it would be interesting to try post it since it involves geometry and GMAT does test geometry afterall.

The question is in the attachment. Enjoy!

Not a bad problem for a 12 year old in Asia. Wish I had received a math education there. Anyway, here's how a 28 year old American would solve it.

Area of large triangle = 15*6=90/2 = 45 subtract the total of the smaller triangles 16 and 4. Answer: 25

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SVP
Joined: 05 Apr 2005
Posts: 1706

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16 Oct 2005, 10:10
gsr wrote:
Area(A) + Area(B) + Area(C) = 45
4+16+Area(C)=45
Area(C)=25

this is good enough.............

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Senior Manager
Joined: 30 Oct 2004
Posts: 284

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16 Oct 2005, 11:19
Well.. you can never really discount the possibility of this appearing on the GMAT... under pressure.. even problems for 12 year olds can blank 20+ year olds!! IMHO!!
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-Vikram

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Director
Joined: 21 Aug 2005
Posts: 786

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16 Oct 2005, 11:26
True.
Also, Poor 12 year olds! Now it is easy, but I am confident I would not have solved this problem as a 12 year old!

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16 Oct 2005, 11:26
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