Answer:
11
Step-by-step explanation:
There is no working you literally just divide
The ratio of the remaining marbles to purple marbles, is 3:14. This means there is a 21% chance that the next marble would be purple. Hope this helps
You can multiply 10 by 13 to get 130.
Brand b is 2 cents cheaper than brand a because it is 14 cents per ounce and brand a is 16 cents per ounce you do 1.68 divided by 12 and 1.28 divided by 8