Answer:
Yes, it is a rational number
Explanation:
A real number is called a rational number if it can be expressed as

Where, p and q are distinct integers,
Such that, q ≠ 0,
Here, the given number,
3.16,

Where, both 79 and 25 are integers also 25 ≠ 0,
Hence, 3.16 is a rational number.