Mark spent
45 of his salary on a mini plane. He spent
13 of the remaining salary on a frisbee.
- What fraction of his salary was left?
- If he had left $18, how much salary did Mark have at first?
(a)
Fraction of salary left after spending on a mini plane
= 1 -
45=
15Fraction of remaining salary left
= 1 -
13=
23Fraction of his salary left
=
15 x
23=
215(b)
Amount that Mark had at first = 15 u
Amount that Mark had left = 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Total amount that Mark had at first
= 15 u
= 15 x 9
= $135
Answer(s): (a)
215; (b) $135