3 sisters, Risa, Jean and Pamela, paid a total of $144 for a gift. Risa paid
14 of what the rest paid. Jean paid
18 of what the rest paid. How much did Pamela pay?
| Risa |
Pamela |
Jean |
Total |
| 1x9 |
4x9 |
5x9 |
| 8x5 |
1x5 |
9x5 |
| 9 u |
31 u |
5 u |
45 u |
Total cost of the gift = 45 u
45 u = 144
1 u = 144 ÷ 45 = 3.20
Amount that Pamela paid
= 45 u - 9 u - 5 u
= 31 u
= 31 x 3.20
= $99.20
Answer: $99.20
