There were 87 more windbreakers than vests in a shop. After 83 windbreakers and 20% 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 |
5 u |
4 u + 83 |
Change |
- 1 u |
- 83 |
After |
4 u |
4 u |
20% =
20100 =
15There were 87 more windbreakers than vests at first. If another 87 vests were added at first, the number of vests and windbreakers would be the same.
5 u + 87 = 4 u + 83
5 u - 4 u = 83 - 87
1 u = -4
1 u = -4 ÷ 1 = -4
Number of vests in the shop at first
= 5 u
= 5 x -4
= -20
Answer(s): -20