Mrs Andy paid a total of $39 for 2
m pencils and 4 notebooks. Each pencil cost $5.
- Express the cost of 1 notebook in terms of m.
- If m = 3, how much did each notebook cost?
(a)
Total amount spent on 2
m pencils
= 2
m x 5
= $10
m Total amount spent on 4 notebooks = $(39 - 10
m)
Total amount spent on 1 notebook = $(
39 - 10m4)
(b)
Price of each notebook if
m = 3
= (39 - 10 x 3) ÷ 4
= (39 - 30) ÷ 4
= 9 ÷ 4
= $2.25
Answer(s): (a) $(
39 - 10m4) or $
39 - 10m4; (b) $2.25