3 sisters, Diana, Jane and Erika, paid a total of $57 for a souvenir. Diana paid
12 of what the rest paid. Jane paid
15 of what the rest paid. How much did Erika pay?
| Diana |
Erika |
Jane |
Total |
| 1x2 |
2x2 |
3x2 |
| 5x1 |
1x1 |
6x1 |
| 2 u |
3 u |
1 u |
6 u |
Total cost of the souvenir = 6 u
6 u = 57
1 u = 57 ÷ 6 = 9.50
Amount that Erika paid
= 6 u - 2 u - 1 u
= 3 u
= 3 x 9.50
= $28.50
Answer: $28.50
