Answer:
28 non-blue marbles.
Step-by-step explanation:
Initial probability of choosing a blue marble = 4/12
Let the number of non-blue marbles to be added be x.

(cross multiply)

Answer:
70%
Step-by-step explanation:
56 vanilla cupcakes
------------------------------- = 0.7, or 0.7(100%), or 70%
80 students
70% of students picked vanilla.
She can make 8
48/6=8
32/4=8
1 - 113 degrees
2 - 67 degrees
3 - 67 degrees
4 - 113 degrees
Hope this helped :)