Mrs Charlie paid a total of $49 for 3
w staplers and 4 notebooks. Each stapler cost $2.
- Express the cost of 1 notebook in terms of w.
- If w = 5, how much did each notebook cost?
(a)
Total amount spent on 3
w staplers
= 3
w x 2
= $6
w Total amount spent on 4 notebooks = $(49 - 6
w)
Total amount spent on 1 notebook = $(
49 - 6w4)
(b)
Price of each notebook if
w = 5
= (49 - 6 x 5) ÷ 4
= (49 - 30) ÷ 4
= 19 ÷ 4
= $4.75
Answer(s): (a) $(
49 - 6w4) or $
49 - 6w4; (b) $4.75