Mrs Sean paid a total of $43 for 3
d markers and 4 notebooks. Each marker cost $2.
- Express the cost of 1 notebook in terms of d.
- If d = 5, how much did each notebook cost?
(a)
Total amount spent on 3
d markers
= 3
d x 2
= $6
d Total amount spent on 4 notebooks = $(43 - 6
d)
Total amount spent on 1 notebook = $(
43 - 6d4)
(b)
Price of each notebook if
d = 5
= (43 - 6 x 5) ÷ 4
= (43 - 30) ÷ 4
= 13 ÷ 4
= $3.25
Answer(s): (a) $(
43 - 6d4) or $
43 - 6d4; (b) $3.25