Tom spent
15 of his income on a marble. He spent
34 of the remaining income on a yoyo.
- What fraction of his income was left?
- If he had left $32, how much income did Tom have at first?
(a)
Fraction of income left after spending on a marble
= 1 -
15=
45Fraction of remaining income left
= 1 -
34=
14Fraction of his income left
=
45 x
14=
420(b)
Amount that Tom had at first = 20 u
Amount that Tom had left = 4 u
4 u = 32
1 u = 32 ÷ 4 = 8
Total amount that Tom had at first
= 20 u
= 20 x 8
= $160
Answer(s): (a)
420; (b) $160