Zoe paid a total of $90 for a shirt, a coat and a vest. The shirt cost
18 of the total cost of the coat and the vest. The vest cost
15 of the total cost of the shirt and the coat. Find the total cost of the vest and the shirt.
Shirt |
Coat |
Vest |
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 shirt, the coat and the vest = 18 u
18 u = 90
1 u = 90 ÷ 18 = 5
Total cost of the vest and the shirt
= 2 u + 3 u
= 5 u
= 5 x 5
= $25
Answer(s): $25