Luis had $25 more than Yoko. After Luis spent 20% of his money and Yoko spent 70% of her money, they still had $218 left altogether.
- How much did Luis have left in the end?
- Express the amount of money Yoko had left as a fraction of the amount of money Luis had in the end. (Give your answer in the simplest form)
| |
Luis |
Yoko |
| Before |
10 u + 25 |
10 u |
| Change |
- 2 u - 5 |
- 7 u |
| After |
8 u + 20 |
3 u |
20% =
20100 =
210 70% =
70100 =
710Total amount that Luis and Yoko had in the end
= 8 u + 20 + 3 u
= 11 u + 20
11 u + 20 = 218
8 u + 3 u = 218 - 20
11 u = 198
1 u = 198 ÷ 11 = 18
Amount that Luis had in the end
= 8 u + 20
= 8 x 18 + 20
= 144 + 20
= $164
(b)
Amount that the Yoko had in the end
= 1 u
= $18
Fraction of the amount that Yoko had left as a fraction of the amount that Luis had in the end
=
18164=
982 Answer(s): (a) $164; (b)
982 
