Question

Dusty is comparing the cost of two colleges for one semester. At State College, room and board costs $1,395 plus $70 per book. At Community College, room and board costs $1,413 plus $67 per book. How many books would he have to buy for the semester costs to be equal?

Answer 1

let number of books be x

so 1395+70x=1413+67x
3x=18
x=6

6 books is the answer