please help im really confused

Answer:
x = 15
Step-by-step explanation:
If you replace x with a couple of numbers all ranging from 5-15, you can calculate the mean, median, mode, and range until you get what the question is showing. I tried the numbers 1, 5, 10, 14, and 15. 15 was the correct answer, as I got the same mean, median, mode, and range as the paper shows.
You're welcome.