There were 61 more sweaters than vests in a shop. After 51 sweaters and 20% of the vests were sold, there were an equal number of sweaters and vests left. How many vests were there in the shop at first?
| |
Vests |
Sweaters |
| Before |
5 u |
4 u + 51 |
| Change |
- 1 u |
- 51 |
| After |
4 u |
4 u |
20% =
20100 =
15There were 61 more sweaters than vests at first. If another 61 vests were added at first, the number of vests and sweaters would be the same.
5 u + 61 = 4 u + 51
5 u - 4 u = 51 - 61
1 u = -10
1 u = -10 ÷ 1 = -10
Number of vests in the shop at first
= 5 u
= 5 x -10
= -50
Answer(s): -50
