Respuesta :
Answer:
[tex]6\: months[/tex]
Step-by-step explanation:
[tex]We\:have\:an\:equation:12+0.5x=9+x\Leftrightarrow 0.5x=3\Leftrightarrow x=6[/tex]
The number of months should be 6 .
Given that,
- The growth rate of Plant A is 0.5 inch per month.
- Plant B grows twice as fast.
Based on the above information, the calculation is as follows:
12 + 0.5x = 9 + x
0.5x = 3
x = 6
Learn more: https://brainly.com/question/4626564?referrer=searchResults