Cameron used 1 1/2 ounces of hydrochloric acid in one experiment. She used 2 1|8 ounces of the acid in a second experiment. How much more acid did Cameron use in the second experiment?
Answer: 5/8 Explanation: You must subtract the two mixed fractions. 1 1/2 can be written as 1.5. 2 1/8 can be written as 2.125. 2.125 - 1.5 = .625. Since you must convert this back to a fraction, 5/8 = .625.
