Mrs Lee paid a total of $50 for 3
f staplers and 4 notebooks. Each stapler cost $3.
- Express the cost of 1 notebook in terms of f.
- If f = 5, how much did each notebook cost?
(a)
Total amount spent on 3
f staplers
= 3
f x 3
= $9
f Total amount spent on 4 notebooks = $(50 - 9
f)
Total amount spent on 1 notebook = $(
50 - 9f4)
(b)
Price of each notebook if
f = 5
= (50 - 9 x 5) ÷ 4
= (50 - 45) ÷ 4
= 5 ÷ 4
= $1.25
Answer(s): (a) $(
50 - 9f4) or $
50 - 9f4; (b) $1.25