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If s shirts can be purchased for d dollars, how many shirts can be pur

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New post 01 Dec 2014, 05:24
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A
B
C
D
E

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  15% (low)

Question Stats:

81% (00:42) correct 19% (00:28) wrong based on 73 sessions

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New post 01 Dec 2014, 06:36
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If s shirts can be purchased for d dollars, how many shirts can be purchased for t dollars?

ts/d

Ans = B
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New post 01 Dec 2014, 18:23
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If s shirts are bought for d dollars, the rate is s shirts/d dollars. If we multiple this by t dollars, this crosses out the dollars on top and bottom and we're left with just shirts as the unit.

To do this, we simply compute s/d*t or Choice B (which is the slightly rearranged ts/d).
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New post 01 Dec 2014, 21:37
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How many shirts we can buy in one dollar = s/d.
Then for t dollars we can buy t* s/d = ts/d.
Hence answer is B.
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New post 01 Dec 2014, 21:54
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My take -

For d dollars - S shirts
For 1 dollar - S/d shirts
For t dollars - St/d shirts

Option B.
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New post 01 Dec 2014, 22:54
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Answer = B) ts/d

Cost of 1 shirt \(= \frac{d}{s}\)

Shirts purchased in t dollars \(= \frac{t}{(\frac{d}{s})} = \frac{ts}{d}\)
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New post 02 Dec 2014, 08:53
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New post 02 Jul 2017, 17:01
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Bunuel wrote:

Tough and Tricky questions: Word Problems.



If s shirts can be purchased for d dollars, how many shirts can be purchased for t dollars?

A) sdt
B) ts/d
C) td/s
D) d/(st)
E) s/(dt)

Kudos for a correct solution.

Source: Chili Hot GMAT

Let s shirts = 2
Let d dollars = 4
Let t dollars = 6

If 2 shirts can be purchased for 4 dollars, each shirt costs 2 dollars. For 6 dollars, you get 3 shirts. Plug in 2, 4, and 6 for each variable into the answer choices. The one that yields 3 is correct.

Eliminate A, D, and E quickly. A is much too big. D and E are fractions (quick peek at denominators tells you that).

Down to Answers B and C.

Answer B: ts/d = 12/4 = 3. Correct.

Answer C: td/s = 24/2 = 12. Incorrect.

Answer B.
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If s shirts can be purchased for d dollars, how many shirts can be pur   [#permalink] 02 Jul 2017, 17:01
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