SOLUTION: Janine spent 55 dollars at the bookstore. she bought 2 books for a totally of 10 dollars and 4 books for a total of 25. how many additional books did she buy if her average cost wa

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Janine spent 55 dollars at the bookstore. she bought 2 books for a totally of 10 dollars and 4 books for a total of 25. how many additional books did she buy if her average cost wa      Log On


   

Question 1021972: Janine spent 55 dollars at the bookstore. she bought 2 books for a totally of 10 dollars and 4 books for a total of 25. how many additional books did she buy if her average cost was 5 dollars per book?
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
If she spent $55 at an average of $5 per book, she bought 11 books.
2 books at $10 and 4 books at $25 is 6 books, so she bought an
additional 5 books.