Oliver had $100 more than Jaslyn. After Oliver spent 20% of his money and Jaslyn spent 70% of her money, they still had $355 left altogether.
- How much did Oliver have left in the end?
- Express the amount of money Jaslyn had left as a fraction of the amount of money Oliver had in the end. (Give your answer in the simplest form)
| |
Oliver |
Jaslyn |
| Before |
10 u + 100 |
10 u |
| Change |
- 2 u - 20 |
- 7 u |
| After |
8 u + 80 |
3 u |
20% =
20100 =
210 70% =
70100 =
710Total amount that Oliver and Jaslyn had in the end
= 8 u + 80 + 3 u
= 11 u + 80
11 u + 80 = 355
8 u + 3 u = 355 - 80
11 u = 275
1 u = 275 ÷ 11 = 25
Amount that Oliver had in the end
= 8 u + 80
= 8 x 25 + 80
= 200 + 80
= $280
(b)
Amount that the Jaslyn had in the end
= 1 u
= $25
Fraction of the amount that Jaslyn had left as a fraction of the amount that Oliver had in the end
=
25280=
556 Answer(s): (a) $280; (b)
556 
