Answer:
Volume = 113.1 cubic cm
Step-by-step explanation:

12/30 * 100 would give you the answer.
Therefore 40% is the answer.
The reason to this is because you need 12/30 of percent (100)
First, we need to calculate the amount of ribbon in inches, and then convert it into feet.
Since 30 inches of ribbon is used in one bow, to make 10 bows, we need multiply:
30 x 10 = 300
Now, we need to convert the inches to feet.
300 in = 25 ft
Our answer is 25 ft of ribbon.
Hope this helped!
Current Weight Weight after adding Marbles
Giulio: 2x 2x + 10
Jim: x x + 5
You didn't post the options so hopefully you can determine the answer based on the info I provided above.