Tim had $20.00 to spend on 6 pens. after buying them, he had $8.00. how much did each pen cost?

If Tim had $20 to spend on 6 pens, and after buying them he had $8 left, that means that he spent 20 - 8 = $12 dollars on those 6 pens.
This means that to calculate the price of one pen, you just need to divide the money he spent ($12) by the number of pens he bought (6), and that is 12/6 = 2. Each pen cost him $2.

Money Tim had Is $20
After buying the pens Tim has $8
Tim bought  6 pens
To find out how much he spent on each pen = 12/6
So Tim spent  $2 a piece on his pens

(Why too much for 6 Pens)

Step-by-step explanation:

1.

2.

x= 3 and x = -1

3.

  (x-6) (x+6) = 0

x = 6 and -6