Answer:
 12 friends
Step-by-step explanation:
Fill in the given number and solve for x.
 855 = 5x +795 . . . . . the total fee was 855
 60 = 5x . . . . . . . . . . . subtract 795
 12 = x . . . . . . . . . . . . . divide by 5
The number of friends you brought was 12.