What is the tense ot the sentence "The problem has been solved" [closed]

Solution 1:

1.Yeah,it's just the passive form of Present Perfect.

2.For sure,you can.
I have completed the task.
The task has been completed (by me).
Or: I have solved the problem.

3.That refers to more Present Simple,as you see.
The problem is solved=The problem is always solved by someone.

Or "solved" can be used as an adjective,as well.(Having a solution, having been explained or answered).
That is a solved problem.

Though,I'm not sure if it really makes sense.