Aman bought a dozen boxes with 24 highlighter pens inside for $8 each box. he repacked five of those boxes into packages of 6 highlighters each and sold them for $3 per package. he sold the rest of the highlighters separately at the rate of 3 pens for $2. how much profit did he make?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field