Neave spent
25 of his income on a flying saucer. He spent
23 of the remaining income on a kitchen set.
- What fraction of his income was left?
- If he had left $21, how much income did Neave have at first?
(a)
Fraction of income left after spending on a flying saucer
= 1 -
25=
35Fraction of remaining income left
= 1 -
23=
13Fraction of his income left
=
35 x
13=
315(b)
Amount that Neave had at first = 15 u
Amount that Neave had left = 3 u
3 u = 21
1 u = 21 ÷ 3 = 7
Total amount that Neave had at first
= 15 u
= 15 x 7
= $105
Answer(s): (a)
315; (b) $105