A pound of water is evaporated from 6 pounds of seawater containing 4% salt. The percentage of salt in the remaining solutions is:
A. 3.60%
B. 4%
C. 4.80%
D. 5.20%
E. 6%
The original 6 pounds contained .24 pounds of salt. The same .24 pounds are in 5 pounds of solution, so the percentage is:
(0.24/5)(100) = 4.8%.
1 of 20
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Exam Details
This is a 20 question exam to help you study for the Math section of the SAT.
Taken: 3,589 times
Added: 11/19/2008
Liked: 1 time
Audience: High School
Tags: Math, SAT

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I think 9 of 20 is broken. The question is "0.4% X .26 +" The first step after the note beings with an extra zero in the first number. "0.o4% = 0.0004" This throws an extra zero in the "right" answer.
Posted: 6/27/2012