Zoe paid a total of $90 for a skirt, a windbreaker and a shirt. The skirt cost
18 of the total cost of the windbreaker and the shirt. The shirt cost
15 of the total cost of the skirt and the windbreaker. Find the total cost of the shirt and the skirt.
| Skirt |
Windbreaker |
Shirt |
Total |
1x2 =
2 u |
8x2 =
16 u |
9x2 =
18 u |
5x3 =
15 u |
1x3 =
3 u |
6x3 =
18 u |
| 2 u |
13 u |
3 u |
18 u |
Total amount that Zoe paid for the skirt, the windbreaker and the shirt = 18 u
18 u = 90
1 u = 90 ÷ 18 = 5
Total cost of the shirt and the skirt
= 2 u + 3 u
= 5 u
= 5 x 5
= $25
Answer(s): $25
