3 cousins, Risa, Gwen and Fiona, paid a total of $56 for a gift. Risa paid
14 of what the others paid. Gwen paid
17 of what the others paid. How much did Fiona pay?
| Risa |
Fiona |
Gwen |
Total |
| 1x8 |
4x8 |
5x8 |
| 7x5 |
1x5 |
8x5 |
| 8 u |
27 u |
5 u |
40 u |
Total cost of the gift = 40 u
40 u = 56
1 u = 56 ÷ 40 = 1.40
Amount that Fiona paid
= 40 u - 8 u - 5 u
= 27 u
= 27 x 1.40
= $37.80
Answer: $37.80
