Mrs Fred paid a total of $45 for 3
b markers and 4 notebooks. Each marker cost $2.
- Express the cost of 1 notebook in terms of b.
- If b = 3, how much did each notebook cost?
(a)
Total amount spent on 3
b markers
= 3
b x 2
= $6
b Total amount spent on 4 notebooks = $(45 - 6
b)
Total amount spent on 1 notebook = $(
45 - 6b4)
(b)
Price of each notebook if
b = 3
= (45 - 6 x 3) ÷ 4
= (45 - 18) ÷ 4
= 27 ÷ 4
= $6.75
Answer(s): (a) $(
45 - 6b4) or $
45 - 6b4; (b) $6.75