Two classmates, Alec and Zoe, plan to meet in the computer lab to type up their research
papers. Alec can type at a speed of 2 pages per hour, whereas Zoe can type 3 pages per
hour. So far, Alec already has 6 pages typed up, compared to Zoe's 4 pages. Once they sit
down and start typing together, the two students will reach the same page count before too
long. How long will that take?
Write a system of equations, graph them, and type the solution.