Seth spent
23 of his income on a lego set. He spent
13 of the remaining income on a basketball set.
- What fraction of his income was left?
- If he had left $20, how much income did Seth have at first?
(a)
Fraction of income left after spending on a lego set
= 1 -
23=
13Fraction of remaining income left
= 1 -
13=
23Fraction of his income left
=
13 x
23=
29(b)
Amount that Seth had at first = 9 u
Amount that Seth had left = 2 u
2 u = 20
1 u = 20 ÷ 2 = 10
Total amount that Seth had at first
= 9 u
= 9 x 10
= $90
Answer(s): (a)
29; (b) $90