Mrs Ivan paid a total of $35 for 3
z markers and 4 notebooks. Each marker cost $2.
- Express the cost of 1 notebook in terms of z.
- If z = 4, how much did each notebook cost?
(a)
Total amount spent on 3
z markers
= 3
z x 2
= $6
z Total amount spent on 4 notebooks = $(35 - 6
z)
Total amount spent on 1 notebook = $(
35 - 6z4)
(b)
Price of each notebook if
z = 4
= (35 - 6 x 4) ÷ 4
= (35 - 24) ÷ 4
= 11 ÷ 4
= $2.75
Answer(s): (a) $(
35 - 6z4) or $
35 - 6z4; (b) $2.75