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Joined: 10 Apr 2015
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A 5-liter flask contains 3.5 liters of a solution thats 5% alcohol. I
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11 Apr 2022, 02:30
11 Apr 2022, 02:30
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54% (02:15) correct
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A 5-liter flask contains 3.5 liters of a solution that’s 5% alcohol. If 1 liter of solution spills out of the flack, and the flask is then filled to capacity with pure alcohol. What percent of the resulting solution is alcohol?
(A) 2.5
(B) 12.5
(C) 20.4
(D) 32.1
(E) 52.5
(A) 2.5
(B) 12.5
(C) 20.4
(D) 32.1
(E) 52.5
Part of the project: GRE Quantitative Reasoning Daily Challenge - (2022) EDITION
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GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
Re: A 5-liter flask contains 3.5 liters of a solution thats 5% alcohol. I
[#permalink]
11 Apr 2022, 02:57
11 Apr 2022, 02:57
1
Quote:
A 5-liter flask contains 3.5 liters of a solution that’s 5% alcohol. If 1 liter of solution spills out of the flack, and the flask is then filled to capacity with pure alcohol. What percent of the resulting solution is alcohol?
Alcohol in 3.5 litres of a solution = 5% of 3.5 = 0.175 litres
Alcohol in 1 litre of solution that spills out of the flack = 5% of 1 = 0.05 litres
Alcohol in 2.5 litres (3.5-1) of a solution left in flask= 0.175 - 0.05 = 0.125 litres
Amount of pure alcohol added to flask = 2.5
Total amount of alcohol in 5 litres of a solution = 2.5 + 0.125 = 2.625 litres
percent of the alcohol in resulting solution = 2.625 / 5 *100% = 52.5%
IMO E
Re: A 5-liter flask contains 3.5 liters of a solution thats 5% alcohol. I
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26 Dec 2023, 00:03
26 Dec 2023, 00:03
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