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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
A bowl was half full of water. Next, 4 cups of water were then added
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24 Feb 2021, 06:45
24 Feb 2021, 06:45
Expert Reply
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Question Stats:
70% (00:55) correct
30% (01:54) wrong based on 10 sessions
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A bowl was half full of water. Next, 4 cups of water were then added to the bowl, filling the bowl to 70% of its capacity. How many cups of water are now in the bowl?
A. 8
B. 10
C. 12
D. 14
E. 17
A. 8
B. 10
C. 12
D. 14
E. 17
Re: A bowl was half full of water. Next, 4 cups of water were then added
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24 Feb 2021, 09:46
24 Feb 2021, 09:46
1
A bowl was half full of water = 50% of the bowl.
A bowl was half full of water + 4 cups of water = 70% of the bowl.
So, 4 cups of water = 20% of the bowl.
therefore, 1 cup of water = 5% of the bowl.
A bowl was half full of water = 50% of the bowl = 10 cups of water.
So, total cups of water = 10 + 4 = 14 (Answer D)
A bowl was half full of water + 4 cups of water = 70% of the bowl.
So, 4 cups of water = 20% of the bowl.
therefore, 1 cup of water = 5% of the bowl.
A bowl was half full of water = 50% of the bowl = 10 cups of water.
So, total cups of water = 10 + 4 = 14 (Answer D)
Re: A bowl was half full of water. Next, 4 cups of water were then added
[#permalink]
24 Feb 2021, 09:55
24 Feb 2021, 09:55
Let 'b' stands for a bowl. Then:
0.5b + 4 = 0.7b
4 = 0.2b (multiply both sides by 5)
20 = b
So if a full bowl is 20, then half a bowl is 10; adding the 4 cups will result in 10 + 4 = 14.
The answer is D.
0.5b + 4 = 0.7b
4 = 0.2b (multiply both sides by 5)
20 = b
So if a full bowl is 20, then half a bowl is 10; adding the 4 cups will result in 10 + 4 = 14.
The answer is D.
