Billy spent
23 of his allowance on a toy car. He spent
13 of the remaining allowance on a yoyo.
- What fraction of his allowance was left?
- If he had left $18, how much allowance did Billy have at first?
(a)
Fraction of allowance left after spending on a toy car
= 1 -
23=
13Fraction of remaining allowance left
= 1 -
13=
23Fraction of his allowance left
=
13 x
23=
29(b)
Amount that Billy had at first = 9 u
Amount that Billy had left = 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Total amount that Billy had at first
= 9 u
= 9 x 9
= $81
Answer(s): (a)
29; (b) $81