00:01
Okay, this diagram here represents everybody.
00:05
So this area here in green is 100%.
00:09
Now we are told that freshmen make up 40%.
00:15
So we'll put 40 in brackets by f for freshmen and the rest, sophomores, 60%.
00:24
So 40 and 60, your total amount 100%.
00:29
Now of the freshmen in state are 70%.
00:40
So let's work out 70 % of 40 and that is 28.
00:51
So here is 28 in state, which out of state must be 12.
00:59
Total, of course, 40.
01:04
Now for sophomore, we are told that 55 % of sophomores are in state.
01:15
So 55 % of the 60 and that will be 33.
01:26
So in state 33.
01:30
So out of state must be 60 minus that 27.
01:37
So this then is the proportion of students who are freshmen, sophomore, in state, out of state...