To find the percentage spent on books, we need to find the relation between the cost spent on books and the cost for last semester as:
[tex]\text{Percentage =}\frac{\text{ cost on books}}{\text{cost semester}}[/tex]So, replacing the values, we get:
[tex]\text{ Percentage=}\frac{\text{ 300}}{2000}\text{ = 0.1}5\text{ = 15\%}[/tex]Answer: 15% of last semester's college costs was spent on books.