The first group has 9 students, so they bring 9 mini tissue boxes.
The second group has 10 students, so they bring 10 mini tissue boxes.
The third group has 11 students, so they bring 11 mini tissue boxes.
In total, the kindergartner groups bring 9 + 10 + 11 = 30 mini tissue boxes.
Since each mini tissue box contains 40 tissues, the kindergartner groups bring 30 * 40 = 1200 tissues together.
#### 1200
The answer is: 1200
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
The kindergartners each need to bring one mini tissue box to class for the school year.  There are three kindergartner groups with 9, 10, and 11 students respectively.  Each mini tissue box contains 40 tissues.  How many tissues do the kindergartner groups bring together?

### Answer:
