$$10+22+4=36$$ 
A data set consists of~~(not distinct) positive integers: 1,7,5,2,5 and x. The average (arithmetic mean) of the~~numbers equals a value in the data set. What is the sum of all positive values of x? 
  * $$10$$ 
  * $$26$$ 
  * $$32$$ 
  * $$36$$ 
  * $$40$$ 