Abi spent ¹₁₁ of her money on some punchers. She spent ³₁₀ of the remaining money on some highlighters and ⁴₇ of what was left on some correction tapes.

1. What fraction of her money was spent on correction tapes?
2. Given that the punchers cost $18 less than the correction tapes, find the sum of money that Abi spent.

Punchers	Remaining money
1	10
	Highlighters	Left
	3	7
		Correction Tapes	Rest
1 u	3 u	4 u	3 u

(a)
Fraction of money left after spending on the punchers
= 1 - ¹₁₁
= ¹⁰₁₁

Fraction of remaining money after spending on the highlighters
= 1 - ³₁₀
= ⁷₁₀

Fraction of what was left after spending on the correction tapes
= 1 - ⁴₇
= ³₇

Fraction of money that was spent on correction tapes = ⁴₁₁

(b)
Amount that Abi spent on the punchers = 1 u
Amount that Abi spent on the correction tapes = 4 u

Amount that the punchers cost less than the correction tapes
= 4 u - 1 u
= 3 u

3 u = 18

1 u = 18 ÷ 3 = 6

Amount that Abi sent
= 1 u + 3 u + 4 u
= 8 u
= 8 x 6
= $48

Answer(s): (a) ⁴₁₁; (b) $48