3 cousins, Jen, Fanny and Olivia, paid a total of $108 for a present. Jen paid
12 of what the others paid. Fanny paid
17 of what the others paid. How much did Olivia pay?
| Jen |
Olivia |
Fanny |
Total |
| 1x8 |
2x8 |
3x8 |
| 7x3 |
1x3 |
8x3 |
| 8 u |
13 u |
3 u |
24 u |
Total cost of the present = 24 u
24 u = 108
1 u = 108 ÷ 24 = 4.50
Amount that Olivia paid
= 24 u - 8 u - 3 u
= 13 u
= 13 x 4.50
= $58.50
Answer: $58.50
