There were 51 more jackets than vests in a shop. After 72 jackets and 30% of the vests were sold, there were an equal number of jackets and vests left. How many vests were there in the shop at first?
|
Vests |
Jackets |
Before |
10 u |
7 u + 72 |
Change |
- 3 u |
- 72 |
After |
7 u |
7 u |
30% =
30100 =
310There were 51 more jackets than vests at first. If another 51 vests were added at first, the number of vests and jackets would be the same.
10 u + 51 = 7 u + 72
10 u - 7 u = 72 - 51
3 u = 21
1 u = 21 ÷ 3 = 7
Number of vests in the shop at first
= 10 u
= 10 x 7
= 70
Answer(s): 70