Answer:
5 coins.
Step-by-step explanation:
(6+5+6+8+x) / 5 = 6
6+5+6+8+x = 30
25+x = 30
x = 5
5 coins
The sum of the total people's equal to 25 coins. In order to find the perfect mean, we would want the total to be 30( because 30/5=6)