There were 91 more dresses than coats in a shop. After 68 dresses and 10% of the coats were sold, there were an equal number of dresses and coats left. How many coats were there in the shop at first?
| |
Coats |
Dresses |
| Before |
10 u |
9 u + 68 |
| Change |
- 1 u |
- 68 |
| After |
9 u |
9 u |
10% =
10100 =
110There were 91 more dresses than coats at first. If another 91 coats were added at first, the number of coats and dresses would be the same.
10 u + 91 = 9 u + 68
10 u - 9 u = 68 - 91
1 u = -23
1 u = -23 ÷ 1 = -23
Number of coats in the shop at first
= 10 u
= 10 x -23
= -230
Answer(s): -230
