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salt must be added

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by sanju09 » Fri Apr 08, 2011 1:24 am
How many ounces of a solution that is 30 percent salt must be added to a 50-ounce solution that is 10 percent salt so that the resulting solution is 20 percent salt?
(A) 20
(B) 30
(C) 40
(D) 50
(E) 60
The mind is everything. What you think you become. -Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
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Source: — Problem Solving |

by HSPA » Fri Apr 08, 2011 1:47 am
equal proportions
First take: 640 (50M, 27V) - RC needs 300% improvement
Second take: coming soon..
Regards,
HSPA.
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