3 sisters, Irene, Gillian and Julie, paid a total of $99 for a gift. Irene paid
14 of what the others paid. Gillian paid
18 of what the others paid. How much did Julie pay?
| Irene |
Julie |
Gillian |
Total |
| 1x9 |
4x9 |
5x9 |
| 8x5 |
1x5 |
9x5 |
| 9 u |
31 u |
5 u |
45 u |
Total cost of the gift = 45 u
45 u = 99
1 u = 99 ÷ 45 = 2.20
Amount that Julie paid
= 45 u - 9 u - 5 u
= 31 u
= 31 x 2.20
= $68.20
Answer: $68.20
