Final answer:
To find the amount of glue in each tube, add the used glue (0.27 ounces) to the remaining glue (1.35 ounces) to get the total amount (1.62 ounces), then divide by the number of tubes (3) to calculate each tube's original content (0.54 ounces).
Step-by-step explanation:
To determine the number of ounces of glue sold in each tube, we will start with the total amount of glue left after Jackie used some of it, which is 1.35 ounces. We then need to add back the amount she used, which is 0.27 ounces, to find the total amount she originally had. Now, let's add these numbers together:
1.35 ounces (remaining) + 0.27 ounces (used) = 1.62 ounces (total)
Since the 1.62 ounces represent the total amount of glue in the 3-pack, we will then divide this number by 3, since there are 3 tubes of glue in the pack:
1.62 ounces ÷ 3 tubes = 0.54 ounces per tube
Therefore, each tube originally contained 0.54 ounces of glue.