Answer: 16 
Explanation:
You need to divide 12 by 3/4 
To do this you turn 12 into a fraction by making it 12/1 
Then you do Keep Change Flip 
Keep 12/1 
Change the division into multiplication
Flip 3/4 into 4/3 
Then you do 12/1 × 4/3 which is 48/3 
Finally you simplify 48/3 into 16