20 % of what number is 13??

I Need answer, now na please,
No wrong answer and nonsense answer kundi, I'll report you.
WITH SOLUTION please.
I don't know kung 2.6 or 65 iyong answer dito,,,.
I will rate 5 stars sa nakakuha ng tamang sagot.
Please po,,,,
Pakisagot din po ang letter 5. ​