Pierre spent
14 of his income on a lego set. He spent
34 of the remaining income on a marble.
- What fraction of his income was left?
- If he had left $21, how much income did Pierre have at first?
(a)
Fraction of income left after spending on a lego set
= 1 -
14=
34Fraction of remaining income left
= 1 -
34=
14Fraction of his income left
=
34 x
14=
316(b)
Amount that Pierre had at first = 16 u
Amount that Pierre had left = 3 u
3 u = 21
1 u = 21 ÷ 3 = 7
Total amount that Pierre had at first
= 16 u
= 16 x 7
= $112
Answer(s): (a)
316; (b) $112