```Question 472981
Let m = number of males in 1980, f = number of females in 1980

Since "In 1980 the ratio of male students to female students at college was 2 males to 3 females", this means that {{{m/f=2/3}}}. Solve for m to get {{{f=(2f)/3}}}

In addition, we know that "since then, the enrollment of male students has increased by 400 and the enrollment of female students has remained the same. The ratio of males to females is currently 1 to 1". So {{{(m+400)/f=1/1}}}

So all we need to do is plug in {{{m=(2f)/3}}} and solve for f.

{{{(m+400)/f=1/1}}}

{{{((2f)/3+400)/f=1/1}}}

{{{1((2f)/3+400)=1*f}}}

{{{(2f)/3+400=f}}}

{{{2f+1200=3f}}}

{{{1200=3f-2f}}}

{{{1200=f}}}

{{{f=1200}}}

So there were 1200 female students in 1980.

Since {{{m=(2f)/3}}}, we know that {{{m=(2(1200))/3=2400/3=800}}}. So {{{m=800}}}

So there were 800 male students in 1980.

Because "the enrollment of male students has increased by 400 and the enrollment of females students has remained the same", we know that the current male enrollment is now 800+400 = 1200 males and the female enrollment remains at 1200

So again, we get the following data

<table border=1><tr><td>&nbsp;</td><th>1980</th><th>Current</th></tr>
<tr><td># of Males</td><td>800</td><td>1200</td></tr>
<tr><td># of Females</td><td>1200</td><td>1200</td></tr>
</table>

So this table tells us that in 1980, there were 800 males and 1200 females (which forms the ratio of 2:3). Also, it tells us that there were 1200 males and 1200 females (which form the ratio 1:1).

Now to answer the question: How many students are currently enrolled at college?

Simply add the number of males and females currently attending to get: 1200+1200 = 2400

So there are 2400 students currently enrolled. ```