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# Q10) The mass of 1 cubic meter of a substance in 800

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Manager
Joined: 30 Aug 2007
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Q10) The mass of 1 cubic meter of a substance in 800 [#permalink]

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02 Oct 2007, 13:18
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Q10)
The mass of 1 cubic meter of a substance in 800 kilograms under certain conditions. What is the volume, in cubic centimeters, of 1 gram of this substance under these conditions? (1 kilogram = 1,000 grams and 1 cubic meter = 1,000,000 cubic centimeters)

(a) 0.80
(b) 1.25
(c) 8.00
(d) 12.50
(e) 80.00
Director
Joined: 17 Sep 2005
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Re: GMAT Prep 2: PS Q10 [#permalink]

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02 Oct 2007, 13:28
avenger wrote:
Q10)
The mass of 1 cubic meter of a substance in 800 kilograms under certain conditions. What is the volume, in cubic centimeters, of 1 gram of this substance under these conditions? (1 kilogram = 1,000 grams and 1 cubic meter = 1,000,000 cubic centimeters)

(a) 0.80
(b) 1.25
(c) 8.00
(d) 12.50
(e) 80.00

1m^3 = 800 KG = 800 * 1000 gm
=> 1 gm = (1m^3)/(800000)

1 m = 100 cm
=> 1 m^3 = (100)^3 = 1000000 cm^3

So, 1 gm = (1m^3)/(800000)
= 1000000 cm^3/800000
= 10/8 cm^3
= 1.25

Hence B.

- Brajesh
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Joined: 30 Aug 2007
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02 Oct 2007, 15:39
Thanks! OA is indeed B. I can't believe I got this one wrong - I was trying to go too fast.

A.
02 Oct 2007, 15:39
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