Betty spent ¹₉ of her money on some staplers. She spent ³₈ of the remaining money on some punchers and ⁴₅ of what was left on some post-it pads.

1. What fraction of her money was spent on post-it pads?
2. Given that the staplers cost $24 less than the post-it pads, find the sum of money that Betty spent.

Staplers	Remaining money
1	8
	Punchers	Left
	3	5
		Post-it Pads	Rest
1 u	3 u	4 u	1 u

(a)
Fraction of money left after spending on the staplers
= 1 - ¹₉
= ⁸₉

Fraction of remaining money after spending on the punchers
= 1 - ³₈
= ⁵₈

Fraction of what was left after spending on the post-it pads
= 1 - ⁴₅
= ¹₅

Fraction of money that was spent on post-it pads = ⁴₉

(b)
Amount that Betty spent on the staplers = 1 u
Amount that Betty spent on the post-it pads = 4 u

Amount that the staplers cost less than the post-it pads
= 4 u - 1 u
= 3 u

3 u = 24

1 u = 24 ÷ 3 = 8

Amount that Betty sent
= 1 u + 3 u + 4 u
= 8 u
= 8 x 8
= $64

Answer(s): (a) ⁴₉; (b) $64