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After a storm deposits 115 billion gallons of water into the

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Joined: 09 Feb 2013
Posts: 114
After a storm deposits 115 billion gallons of water into the  [#permalink]

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Updated on: 16 Feb 2013, 03:55
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Difficulty:

45% (medium)

Question Stats:

71% (02:12) correct 29% (02:14) wrong based on 215 sessions

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After a storm deposits 115 billion gallons of water into the city reservoir, the reservoir is 80% full. If the original contents of the reservoir totaled 245 billion gallons, the reservoir was approximately what percentage full before the storm?

A. 45%
B. 48%
C. 54%
D. 58%
E. 65%

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Originally posted by emmak on 15 Feb 2013, 12:03.
Last edited by Bunuel on 16 Feb 2013, 03:55, edited 1 time in total.
Edited the question.
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Joined: 24 Jul 2011
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GMAT 1: 780 Q51 V48
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Re: After a storm deposits 115 billion gallons of water into the  [#permalink]

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15 Feb 2013, 21:35
When the storm deposited 115 billion gallons, volume of water in the reservoir = 245 + 115 = 360 billion gallons

If this is only 80% of the capacity of the reservoir, the total capacity of the reservoir = 360/0.8 = 450 billion gallons

Therefore percentage of reservoir that was full before the storm = (245/450)*100 = 54.4%

Option C
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Joined: 19 Oct 2014
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Re: After a storm deposits 115 billion gallons of water into the  [#permalink]

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25 Oct 2014, 08:18
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Total capacity = 450 (360/.8)

% before storm = 245/450 = 54.4%
Manager
Joined: 24 Jul 2016
Posts: 51
Re: After a storm deposits 115 billion gallons of water into the  [#permalink]

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10 Jul 2017, 14:40
emmak wrote:
After a storm deposits 115 billion gallons of water into the city reservoir, the reservoir is 80% full. If the original contents of the reservoir totaled 245 billion gallons, the reservoir was approximately what percentage full before the storm?

A. 45%
B. 48%
C. 54%
D. 58%
E. 65%

i think it should have said content of water before the storm. wording was really confusing.
Re: After a storm deposits 115 billion gallons of water into the   [#permalink] 10 Jul 2017, 14:40
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