There were 83 more coats than skirts in a shop. After 81 coats and 10% of the skirts were sold, there were an equal number of coats and skirts left. How many skirts were there in the shop at first?
|
Skirts |
Coats |
Before |
10 u |
9 u + 81 |
Change |
- 1 u |
- 81 |
After |
9 u |
9 u |
10% =
10100 =
110There were 83 more coats than skirts at first. If another 83 skirts were added at first, the number of skirts and coats would be the same.
10 u + 83 = 9 u + 81
10 u - 9 u = 81 - 83
1 u = -2
1 u = -2 ÷ 1 = -2
Number of skirts in the shop at first
= 10 u
= 10 x -2
= -20
Answer(s): -20