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02 Sep 2019, 07:56
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
90% (01:26) correct
10%
(01:47)
wrong
based on 199
sessions
History
Date
Time
Result
Not Attempted Yet
How many ounces of water must be added to 48 ounces of alcohol to make a solution that contains 25% alcohol?
A) 140
B) 144
C) 148
D) 152
E) 156
A) 140
B) 144
C) 148
D) 152
E) 156
02 Sep 2019, 08:08
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thesaifeye
48/(48+144)=48/192=1/4=25%.
Hence B
02 Sep 2019, 08:14
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Existing Alcohol Solution = 48 Ounces = 100% Alcohol
To make it into 25% means 1/4 of mixed solution(A+W)
we need to add 3/4(48*3) more of water to it.
Which gives us 144 as answer, Option B
To make it into 25% means 1/4 of mixed solution(A+W)
we need to add 3/4(48*3) more of water to it.
Which gives us 144 as answer, Option B
