Jen spent 60% of her money on a number of marbles. She spent 25% of the remaining money on a few stickers and 50% of what was left on a number of cards.
- What fraction of her money was left?
- Given that the marbles cost $81 more than the cards, find the sum of money Jen had at first.
(a)
60% =
60100 =
35 Fraction of money left after buying the marbles = 1 -
35 =
25 25% =
25100 =
14 Fraction of remaining money after buying the stickers = 1 -
14 =
34 50% =
50100 =
12 Fraction of what is left after buying the cards = 1 -
12 =
12 Fraction of money left after buying the marbles
=
25 x
34 x
12=
320 (b)
Fraction of money spent on the cards
=
25 x
34 x
12=
320Fraction of money spent on the marbles
=
35=
1220Amount spent more on the marbles than the cards
= 12 u - 3 u
= 9 u
9 u = 81
1 u = 81 ÷ 9 = 9
Amount that Jen had at first
= 20 u
= 20 x 9
= $180
Answer(s): (a)
320; (b) $180
