Gwen spent $36 on some notebooks, staplers and pencils. The number of notebooks she bought was ²₃ the number of staplers. The number of pencils she bought was ³₄ the number of staplers. The ratio of the amount of money she spent on the notebooks, staplers and pencils was 2 : 7 : 3. The staplers were sold at 4 for $7. Find the price of 1 notebook.

Amount spent
Notebooks	Staplers	Pencils	Total
2 u	7 u	3 u	$36

Total amount that Gwen spent on notebooks, staplers and pencils
= 2 u + 7 u + 3 u
= 12 u

12 u = 36

1 u = 36 ÷ 12 = 3

Amount that Gwen spent on staplers
= 7 u
= 7 x 3
= $21

Number of sets of staplers of 4 bought
= 21 ÷ 7
= 3

Number of staplers that Gwen bought
= 3 x 4
= 12

Number of items bought
Notebooks	Staplers	Pencils	Total
2x4	3x4
	4x3	3x3
8 p	12 p	9 p	29 p

The number of staplers bought is repeated.  Make the number of staplers bought is the same.  LCM of 3 and 4 is 12.

Number of staplers that Gwen bought = 12 p

12 p = 12

1 p = 12 ÷ 12 = 1

Number of notebooks that Gwen bought
= 8 p
= 8 x 1
= 8

Amount that Gwen spent on notebooks
= 2 u
= 2 x 3
= $6

Price of 1 notebook
= 6 ÷ 8
= $0.75

Answer(s): $0.75