Opal spent 60% of her money on a number of pens. She spent 25% of the remaining money on a few marbles and 40% of what was left on a number of buttons.
- What fraction of her money was left?
- Given that the pens cost $42 more than the buttons, find the sum of money Opal had at first.
(a)
60% =
60100 =
35 Fraction of money left after buying the pens = 1 -
35 =
25 25% =
25100 =
14 Fraction of remaining money after buying the marbles = 1 -
14 =
34 40% =
40100 =
25 Fraction of what is left after buying the buttons = 1 -
25 =
35 Fraction of money left after buying the pens
=
25 x
34 x
35=
950 (b)
Fraction of money spent on the buttons
=
25 x
34 x
35=
950Fraction of money spent on the pens
=
35=
3050Amount spent more on the pens than the buttons
= 30 u - 9 u
= 21 u
21 u = 42
1 u = 42 ÷ 21 = 2
Amount that Opal had at first
= 50 u
= 50 x 2
= $100
Answer(s): (a)
950; (b) $100
