Zoe paid a total of $90 for a skirt, a vest and a shirt. The skirt cost
18 of the total cost of the vest and the shirt. The shirt cost
15 of the total cost of the skirt and the vest. Find the total cost of the shirt and the skirt.
| Skirt |
Vest |
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 vest 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
