Luis spent
13 of his income on a yoyo. He spent
13 of the remaining income on a mini plane.
- What fraction of his income was left?
- If he had left $40, how much income did Luis have at first?
(a)
Fraction of income left after spending on a yoyo
= 1 -
13=
23Fraction of remaining income left
= 1 -
13=
23Fraction of his income left
=
23 x
23=
49(b)
Amount that Luis had at first = 9 u
Amount that Luis had left = 4 u
4 u = 40
1 u = 40 ÷ 4 = 10
Total amount that Luis had at first
= 9 u
= 9 x 10
= $90
Answer(s): (a)
49; (b) $90