3 brothers, Emily, Min and Erika, paid a total of $92 for a present. Emily paid
13 of what the rest paid. Min paid
17 of what the rest paid. How much did Erika pay?
| Emily |
Erika |
Min |
Total |
| 1x2 |
3x2 |
4x2 |
| 7x1 |
1x1 |
8x1 |
| 2 u |
5 u |
1 u |
8 u |
Total cost of the present = 8 u
8 u = 92
1 u = 92 ÷ 8 = 11.50
Amount that Erika paid
= 8 u - 2 u - 1 u
= 5 u
= 5 x 11.50
= $57.50
Answer: $57.50
