Sabrina spent ³₄ of her money on 10 notebooks and 7 markers. The cost of each marker is 2 times the cost of each notebook. She bought some more notebooks with ³₄ of her remaining money. How many notebooks did Sabrina buy altogether?

10 notebooks + 7 markers		Remaining  amount		Total amount
3 p = 24 u		1 p = 8 u		4 p
10 notebooks	7 markers	More notebooks	Left
		3	1
10 u	14 u	6 u

Cost of 1 notebook = 1 u
Cost of 1 marker = 2 u

Cost of 10 notebooks = 10 x 1 u = 10 u
Cost of 7 markers = 7 x 2 u = 14 u

Cost of 10 notebooks + 7 markers
= 10 u + 14 u
= 24 u

3 p = 24 u

1 p = 24 u ÷ 3 = 8 u

Amount of remaining money that Sabrina spent on buying more notebooks
= ³₄ x 8 u
= 6 u

Number of notebooks that Sabrina bought with ³₄ of her remaining money
= 6 u ÷ 1 u
= 6

Total number of notebooks that Sabrina bought
= 10 + 6
= 16

Answer(s): 16