A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks. : GMAT Problem Solving (PS)
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# A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks.

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Manager
Joined: 09 Jun 2010
Posts: 78
Followers: 1

Kudos [?]: 19 [0], given: 17

A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks. [#permalink]

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19 Jul 2010, 02:07
00:00

Difficulty:

(N/A)

Question Stats:

93% (01:12) correct 7% (00:00) wrong based on 44 sessions

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A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks. What is the probability that a block picked at random from the box will be red ?

1/25
1/12
1/7
1/5
1/3
[Reveal] Spoiler: OA
Manager
Joined: 03 Jun 2010
Posts: 183
Location: United States (MI)
Concentration: Marketing, General Management
Followers: 6

Kudos [?]: 57 [0], given: 40

Re: A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks. [#permalink]

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19 Jul 2010, 02:40
There are 25 reds out of 300 blocks.

25/300 = 1/12 (B)
Intern
Joined: 05 Jul 2010
Posts: 27
Followers: 0

Kudos [?]: 21 [0], given: 7

Re: A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks. [#permalink]

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19 Jul 2010, 03:33
You're right. It would be B.
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Re: A box contains 25 red blacks, 100 blue blocks, and 175 yellow blocks.   [#permalink] 19 Jul 2010, 03:33
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