Tommy spent
15 of his salary on a flying saucer. He spent
13 of the remaining salary on a marble.
- What fraction of his salary was left?
- If he had left $64, how much salary did Tommy have at first?
(a)
Fraction of salary left after spending on a flying saucer
= 1 -
15=
45Fraction of remaining salary left
= 1 -
13=
23Fraction of his salary left
=
45 x
23=
815(b)
Amount that Tommy had at first = 15 u
Amount that Tommy had left = 8 u
8 u = 64
1 u = 64 ÷ 8 = 8
Total amount that Tommy had at first
= 15 u
= 15 x 8
= $120
Answer(s): (a)
815; (b) $120