If you just add up x and w, you count twice all those who saw both.
So, let's say b people saw both.
That means the total people who saw either x or w or both is
215 + 25 - 15 = 225
200 saw only x
10 saw only w
15 saw both
No idea what z movie is, or who "Neither of the 200 people" are. Maybe you can resolve these issues yourself.
Last Saturday, 215 people saw movie x, 25 people saw movie w, and 15 people saw both movie x and w. Neither of the 200 people saw z movie. How many people saw one movie on Saturday.
Please show the problem step by step to get the answer. I added 215 + 25 + 15 to get 255. Then 255-200 to get 55. Is this correct?
1 answer