Answer : The average student contribution for one year at a private college in 2012-2013 is, $27,609
Explanation : Given,
The average cost of one year at a private college in 2012-2013 = $43,289
The average grant aid received by a student at a private college in 2012-2013 = $15,680
Now we have to determine the average student contribution for one year at a private college in 2012-2013.
The average student contribution for one year at a private college in 2012-2013 = Average cost of one year at a private college - Average grant aid received by a student at a private college
The average student contribution for one year at a private college in 2012-2013 = $43,289 - $15,680
The average student contribution for one year at a private college in 2012-2013 = $27,609
Thus, the average student contribution for one year at a private college in 2012-2013 is, $27,609