Mrs Japheth paid a total of $35 for 2
x pencils and 4 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 2
x pencils
= 2
x x 3
= $6
x Total amount spent on 4 notebooks = $(35 - 6
x)
Total amount spent on 1 notebook = $(
35 - 6x4)
(b)
Price of each notebook if
x = 3
= (35 - 6 x 3) ÷ 4
= (35 - 18) ÷ 4
= 17 ÷ 4
= $4.25
Answer(s): (a) $(
35 - 6x4) or $
35 - 6x4; (b) $4.25