Abi, Tina and Olivia went shopping together. They brought a total of $778 with them. Abi spent 20% of her money. Tina spent $153 and Olivia spent thrice as much money as Abi. In the end, they had $413 left. How much money did Tina and Olivia have altogether in the end?
| |
Abi |
Tina |
Olivia |
Total |
| Before |
5 u |
|
|
778 |
| Change |
- 1 u |
- 153 |
- 3 u |
- 365 |
| After |
4 u |
? |
413 |
20% =
20100 =
15 Abi spent: Abi's total = 1 : 5
Amount that Olivia spent
= 3 x 1 u
= 3 u
Amount that the three girls spent
= 1 u + 3 u + 153
= 4 u + 153
Amount that the three girls spent
= 778 - 413
= $365
4 u + 153 = 365
4 u = 365 - 153
4 u = 212
1 u = 212 ÷ 4 = 53
Amount that Tina and Olivia had in the end
= 413 - 4 u
= 413 - 4 x 53
= 413 - 212
= $201
Answer(s): $201
