Fred spent
15 of his income on a toy car. He spent
23 of the remaining income on a mini-helicopter.
- What fraction of his income was left?
- If he had left $36, how much income did Fred have at first?
(a)
Fraction of income left after spending on a toy car
= 1 -
15=
45Fraction of remaining income left
= 1 -
23=
13Fraction of his income left
=
45 x
13=
415(b)
Amount that Fred had at first = 15 u
Amount that Fred had left = 4 u
4 u = 36
1 u = 36 ÷ 4 = 9
Total amount that Fred had at first
= 15 u
= 15 x 9
= $135
Answer(s): (a)
415; (b) $135