3 sisters, Shiyun, Ivory and Sarah, paid a total of $154 for a gift. Shiyun paid
13 of what the others paid. Ivory paid
16 of what the others paid. How much did Sarah pay?
| Shiyun |
Sarah |
Ivory |
Total |
| 1x7 |
3x7 |
4x7 |
| 6x4 |
1x4 |
7x4 |
| 7 u |
17 u |
4 u |
28 u |
Total cost of the gift = 28 u
28 u = 154
1 u = 154 ÷ 28 = 5.50
Amount that Sarah paid
= 28 u - 7 u - 4 u
= 17 u
= 17 x 5.50
= $93.50
Answer: $93.50
