Archie spent
45 of his salary on a mini-helicopter. He spent
13 of the remaining salary on a lego set.
- What fraction of his salary was left?
- If he had left $20, how much salary did Archie have at first?
(a)
Fraction of salary left after spending on a mini-helicopter
= 1 -
45=
15Fraction of remaining salary left
= 1 -
13=
23Fraction of his salary left
=
15 x
23=
215(b)
Amount that Archie had at first = 15 u
Amount that Archie had left = 2 u
2 u = 20
1 u = 20 ÷ 2 = 10
Total amount that Archie had at first
= 15 u
= 15 x 10
= $150
Answer(s): (a)
215; (b) $150