Sarah's DQ 1 part 2

There were 160 people surveyed and asked if they believe in either UFO's, ghosts, or Bigfoot.
How many people believed in atleast one concept?

2 believed in all of them.
4 believed in ghosts and Bigfoot.
4-2 =2
6 believed in ghosts and Bigfoot.
6-2 =4
11 people believed in UFO's and ghosts.
11-2= 9
42 people believed in UFO's.
42- (2+2+9)= 29
45 people believed in ghosts
45- (9+2+4) =30
21 people believed in Bigfoot
21-(2+2+4)=13

2+2+4+9+29+30+13= 89
ANSWER= 89 people believed in atleast one concept.