Fanny spent ⁵₈ of her money on 10 correction tapes and 5 highlighters. The cost of one highlighter was twice the cost of one correction tape. She bought some more highlighters with ¹₆ of her remaining money. How many highlighters did Fanny buy altogether?

10 correction tapes and 5 highlighters	Remaining amount
5x2	3x2
	More highlighters	Left
	1x1	5x1
10 p	1 p	5 p

Cost of 1 correction tape = 1 u
Cost of 1 highlighter = 2 u

Cost of 10 correction tapes = 10 x 1 u = 10 u
Cost of 5 highlighters = 5 x 2 u = 10 u

Total cost of 10 correction tapes and 5 highlighters
= 10 u + 10 u
= 20 u

10 p = 20 u

1 p = 20 ÷ 10 = 2 u

Amount that Fanny used to buy more highlighters
= 1 p
= 1 x 2 u
= 2 u

Number of more highlighters that Fanny bought
= 2 u ÷ 2 u
= 1

Total number of highlighters that Fanny bought
= 5 + 1
= 6

Answer(s): 6