There were 78 more skirts than vests in a shop. After 100 skirts and 40% of the vests were sold, there were an equal number of skirts and vests left. How many vests were there in the shop at first?
|
Vests |
Skirts |
Before |
5 u |
3 u + 100 |
Change |
- 2 u |
- 100 |
After |
3 u |
3 u |
40% =
40100 =
25There were 78 more skirts than vests at first. If another 78 vests were added at first, the number of vests and skirts would be the same.
5 u + 78 = 3 u + 100
5 u - 3 u = 100 - 78
2 u = 22
1 u = 22 ÷ 2 = 11
Number of vests in the shop at first
= 5 u
= 5 x 11
= 55
Answer(s): 55