3 cousins, Lucy, Fanny and Irene, paid a total of $63 for a present. Lucy paid
14 of what the others paid. Fanny paid
16 of what the others paid. How much did Irene pay?
| Lucy |
Irene |
Fanny |
Total |
| 1x7 |
4x7 |
5x7 |
| 6x5 |
1x5 |
7x5 |
| 7 u |
23 u |
5 u |
35 u |
Total cost of the present = 35 u
35 u = 63
1 u = 63 ÷ 35 = 1.80
Amount that Irene paid
= 35 u - 7 u - 5 u
= 23 u
= 23 x 1.80
= $41.40
Answer: $41.40
