There were 72 more windbreakers than vests in a shop. After 81 windbreakers and 10% of the vests were sold, there were an equal number of windbreakers and vests left. How many vests were there in the shop at first?
|
Vests |
Windbreakers |
Before |
10 u |
9 u + 81 |
Change |
- 1 u |
- 81 |
After |
9 u |
9 u |
10% =
10100 =
110There were 72 more windbreakers than vests at first. If another 72 vests were added at first, the number of vests and windbreakers would be the same.
10 u + 72 = 9 u + 81
10 u - 9 u = 81 - 72
1 u = 9
1 u = 9 ÷ 1 = 9
Number of vests in the shop at first
= 10 u
= 10 x 9
= 90
Answer(s): 90