Answer:
It will take 24 months
Explanation:
1 foot = 12 inches
We need to determine how long it will take to grow 12 inches
The rate is 1/2 inch per month
Length = rate * time
12 inches = 1/2 inch * time
Multiply each side by 2 to isolate time
12*2 = 1/2 *2 * time
24 = time
It will take 24 months