Find the number of gallons of sulfuric acid in 90 gallons of solution in a tank, if the percent of sulfuric acid is 50%.
A. 45 gal
B. 4.5 gal
C. 9 gal
D. 18 gal
E. 90 gal
Answer: A
Mathematics
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+ 
A. 
B. 
C. 6y
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