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# M21#32

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Manager
Joined: 22 Jul 2009
Posts: 191
Followers: 4

Kudos [?]: 231 [1] , given: 18

M21#32 [#permalink]  12 Oct 2009, 17:11
1
KUDOS
This question should be edited. Adding a comma would do.

If 5 dollars and 35 crowns are equivalent to 7 pounds and 4 dollars and 4 pounds are equivalent to 56 crowns, what is the dollar equivalent of 1 pound and 28 crowns?

(C) 2008 GMAT Club - m21#32

* $7.00 *$7.50
* $8.50 *$9.00
* $10.00 Write $$5d + 35c = 7p$$ and $$4d + 4p = 56c$$ . Solving this system for $$p$$ , we get $$p = \frac{5}{3}d$$ . Solving this system for $$c$$ , we get $$c = \frac{4}{21}d$$ . 1 pound and 28 crowns = $$\frac{5}{3}d + 28*\frac{4}{21}d = 7d$$ . The correct answer is A. The question should be rewritten as the text is ambiguous. It could either mean that: 1) 35 crowns are equivalent to 7 pounds; 4 dollars and 4 pounds are equivalent to 56, or 2) 5 dollars and 35 crowns are equivalent to 7 pounds and 4 dollars; 4 pounds are equivalent to 56 crowns _________________ Please kudos if my post helps.  Kaplan Promo Code Knewton GMAT Discount Codes GMAT Pill GMAT Discount Codes SVP Joined: 30 Apr 2008 Posts: 1888 Location: Oklahoma City Schools: Hard Knocks Followers: 38 Kudos [?]: 506 [1] , given: 32 Re: M21#32 [#permalink] 13 Oct 2009, 13:11 1 This post received KUDOS I agree that the question is definitely ambiguous. I suggest that it be rewritten to say: If 5 dollars and 35 crowns is equivalent to 7 pounds, and 4 dollars and 4 pounds is equivalent to 56 crowns, 1 pound and 28 crowns is equivalent to how many dollars? powerka wrote: This question should be edited. Adding a comma would do. If 5 dollars and 35 crowns are equivalent to 7 pounds and 4 dollars and 4 pounds are equivalent to 56 crowns, what is the dollar equivalent of 1 pound and 28 crowns? (C) 2008 GMAT Club - m21#32 *$7.00
* $7.50 *$8.50
* $9.00 *$10.00

Write $$5d + 35c = 7p$$ and $$4d + 4p = 56c$$ . Solving this system for $$p$$ , we get $$p = \frac{5}{3}d$$ . Solving this system for $$c$$ , we get $$c = \frac{4}{21}d$$ . 1 pound and 28 crowns = $$\frac{5}{3}d + 28*\frac{4}{21}d = 7d$$ .

The question should be rewritten as the text is ambiguous. It could either mean that:
1) 35 crowns are equivalent to 7 pounds; 4 dollars and 4 pounds are equivalent to 56, or
2) 5 dollars and 35 crowns are equivalent to 7 pounds and 4 dollars; 4 pounds are equivalent to 56 crowns

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J Allen Morris
**I'm pretty sure I'm right, but then again, I'm just a guy with his head up his a.

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CIO
Joined: 02 Oct 2007
Posts: 1218
Followers: 94

Kudos [?]: 826 [0], given: 334

Re: M21#32 [#permalink]  13 Oct 2009, 22:45
Thank you guys! +1 to both. I've edit the question per Allen's suggestion.
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Re: M21#32   [#permalink] 13 Oct 2009, 22:45
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# M21#32

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