If cement, gravel and sand are to be mixed in 7:10:13 : GMAT Problem Solving (PS)
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# If cement, gravel and sand are to be mixed in 7:10:13

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Intern
Joined: 25 Jan 2013
Posts: 24
Followers: 0

Kudos [?]: 40 [0], given: 11

If cement, gravel and sand are to be mixed in 7:10:13 [#permalink]

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21 Feb 2013, 07:10
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Difficulty:

25% (medium)

Question Stats:

77% (02:45) correct 23% (02:14) wrong based on 75 sessions

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If cement, gravel and sand are to be mixed in 7:10:13 and 8 tons of cement is available how many tons of mixture can be produced assuming that sufficient gravel and sand is readily available.

A. 35 7/8
B. 36
C. 34 2/7
D. 34 5/7
E. 34 6/7
[Reveal] Spoiler: OA
Math Expert
Joined: 02 Sep 2009
Posts: 36549
Followers: 7078

Kudos [?]: 93147 [0], given: 10553

Re: If cement, gravel and sand are to be mixed in 7:10:13 [#permalink]

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21 Feb 2013, 07:16
antoxavier wrote:
If cement, gravel and sand are to be mixed in 7:10:13 and 8 tons of cement is available how many tons of mixture can be produced assuming that sufficient gravel and sand is readily available.

A. 35 7/8
B. 36
C. 34 2/7
D. 34 5/7
E. 34 6/7

Cement:Gravel:Sand = 7:10:13 --> total of 7+10+13 = 30 parts.

If we use 8 tons of cement, then we'll get 8/7*30 = 34 2/7 tons of mixture.

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Re: If cement, gravel and sand are to be mixed in 7:10:13   [#permalink] 21 Feb 2013, 07:16
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