Mrs Ian paid a total of $30 for 2
e pencils and 8 notebooks. Each pencil cost $2.
- Express the cost of 1 notebook in terms of e.
- If e = 3, how much did each notebook cost?
(a)
Total amount spent on 2
e pencils
= 2
e x 2
= $4
e Total amount spent on 8 notebooks = $(30 - 4
e)
Total amount spent on 1 notebook = $(
30 - 4e8)
(b)
Price of each notebook if
e = 3
= (30 - 4 x 3) ÷ 8
= (30 - 12) ÷ 8
= 18 ÷ 8
= $2.25
Answer(s): (a) $(
30 - 4e8) or $
30 - 4e8; (b) $2.25