3 sisters, Shiyun, Victoria and Abi, paid a total of $138 for a gift. Shiyun paid
13 of what the rest paid. Victoria paid
15 of what the rest paid. How much did Abi pay?
Shiyun |
Abi |
Victoria |
Total |
1x3 |
3x3 |
4x3 |
5x2 |
1x2 |
6x2 |
3 u |
7 u |
2 u |
12 u |
Total cost of the gift = 12 u
12 u = 138
1 u = 138 ÷ 12 = 11.50
Amount that Abi paid
= 12 u - 3 u - 2 u
= 7 u
= 7 x 11.50
= $80.50
Answer: $80.50