Answer:
YES IT IS A RATIONAL NUMBER
Explanation:
The simplified form of 23 + 2.16 = 25.16
We know that:
Rational number: rational number is the number that can be written as a/b (a and b would be intergers and b is not equal to 0). Rational number would be most of numbers we use in out life, except Square root and Pi number.
In this case, 25.16 can be written as:
2516/100
SO YES IT IS A RATIONAL NUMBER
Hope this helped :3