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A 7.5 liter mixture of water and sugar is 60% sugar. If 1.5 liters of
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22 Jun 2022, 05:54
22 Jun 2022, 05:54
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A 7.5 liter mixture of water and sugar is 60% sugar. If 1.5 liters of water is added, approximately what is the % of the new mixture of sugar?
A. 40%
B. 50%
C. 63%
D. 64%
E. 68
A. 40%
B. 50%
C. 63%
D. 64%
E. 68
Part of the project: GRE QCQ & PS 3 Questions Every One DAILY Challenge - (2022)
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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
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A 7.5 liter mixture of water and sugar is 60% sugar. If 1.5 liters of
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22 Jun 2022, 06:14
22 Jun 2022, 06:14
Carcass wrote:
A 7.5 liter mixture of water and sugar is 60% sugar. If 1.5 liters of water is added, approximately what is the % of the new mixture of sugar?
A. 40%
B. 50%
C. 63%
D. 64%
E. 68
A. 40%
B. 50%
C. 63%
D. 64%
E. 68
ASIDE: We can eliminate C, D and E immediately (without performing any calculations).
Here's why: If we begin with a mixture that's 60% sugar and then we dilute it by adding water, the resulting mixture will have less than 60% sugar. So, eliminate C, D and E.
Okay, on to the solution.
7.5 liter mixture of water and sugar is 60% sugar.
60% of 7.5 liters is sugar
60% of 7.5 = 4.5, so the 4.5 mixture has 4.5 liters of sugar
1.5 liters of water is added
So, the volume of the new mixture is 9 liters.
Since no sugar was added, the volume of the sugar is still 4.5 liters
(4.5)/9 = 1/2 = 50%
So, the new mixture is 50% sugar.
Answer: B
gmatclubot
A 7.5 liter mixture of water and sugar is 60% sugar. If 1.5 liters of [#permalink]
22 Jun 2022, 06:14
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