There were 91 more shirts than windbreakers in a shop. After 90 shirts and 25% of the windbreakers were sold, there were an equal number of shirts and windbreakers left. How many windbreakers were there in the shop at first?
|
Windbreakers |
Shirts |
Before |
4 u |
3 u + 90 |
Change |
- 1 u |
- 90 |
After |
3 u |
3 u |
25% =
25100 =
14There were 91 more shirts than windbreakers at first. If another 91 windbreakers were added at first, the number of windbreakers and shirts would be the same.
4 u + 91 = 3 u + 90
4 u - 3 u = 90 - 91
1 u = -1
1 u = -1 ÷ 1 = -1
Number of windbreakers in the shop at first
= 4 u
= 4 x -1
= -4
Answer(s): -4