Ethan spent
25 of his income on a frisbee. He spent
34 of the remaining income on a toy car.
- What fraction of his income was left?
- If he had left $21, how much income did Ethan have at first?
(a)
Fraction of income left after spending on a frisbee
= 1 -
25=
35Fraction of remaining income left
= 1 -
34=
14Fraction of his income left
=
35 x
14=
320(b)
Amount that Ethan had at first = 20 u
Amount that Ethan had left = 3 u
3 u = 21
1 u = 21 ÷ 3 = 7
Total amount that Ethan had at first
= 20 u
= 20 x 7
= $140
Answer(s): (a)
320; (b) $140