Mrs Neave paid a total of $50 for 4
x pencils and 8 notebooks. Each pencil cost $3.
- Express the cost of 1 notebook in terms of x.
- If x = 3, how much did each notebook cost?
(a)
Total amount spent on 4
x pencils
= 4
x x 3
= $12
x Total amount spent on 8 notebooks = $(50 - 12
x)
Total amount spent on 1 notebook = $(
50 - 12x8)
(b)
Price of each notebook if
x = 3
= (50 - 12 x 3) ÷ 8
= (50 - 36) ÷ 8
= 14 ÷ 8
= $1.75
Answer(s): (a) $(
50 - 12x8) or $
50 - 12x8; (b) $1.75