00:01
Okay, we have two things going on here.
00:04
Being in a dorm and studying remotely.
00:08
Let's do a venn diagram to show what's going on.
00:11
Here is my rectangle.
00:14
U is everyone, so we'll say it's 100 people.
00:19
100%.
00:20
And we have two situations.
00:22
Dorm, we'll say is d and remote are...
00:31
So d and r.
00:33
Now, we are told that 40 % of the students live in a dorm and attend lectures remotely.
00:42
So i know then at 40 has to go in the middle here.
00:47
But there you're in a dorm and remote.
00:52
Then we are told that 50 % attend remotely.
00:59
So r then will be 50.
01:02
So i know r, i can go here, 50, because this plus this must make 50...