3 cousins, Gem, Zoe and Julie, paid a total of $180 for a present. Gem paid
12 of what the others paid. Zoe paid
17 of what the others paid. How much did Julie pay?
| Gem |
Julie |
Zoe |
Total |
| 1x8 |
2x8 |
3x8 |
| 7x3 |
1x3 |
8x3 |
| 8 u |
13 u |
3 u |
24 u |
Total cost of the present = 24 u
24 u = 180
1 u = 180 ÷ 24 = 7.50
Amount that Julie paid
= 24 u - 8 u - 3 u
= 13 u
= 13 x 7.50
= $97.50
Answer: $97.50
