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%.