Question

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?


3/8 ounce


5/8 ounce


1 5/8 ounces


3 5/8 ounces

Answer 1

The difference in the amounts of acid used in the two experiments can be found by subtracting the amount used in the first experiment from the amount used in the second experiment.

2 1/8 - 1 1/2 = 4/8 + 1/8 - 3/2 = 5/8

Cameron used 5/8 ounces more acid in the second experiment. Therefore, the correct answer is:

5/8 ounce