There were 75 more coats than sweaters in a shop. After 63 coats and 30% of the sweaters were sold, there were an equal number of coats and sweaters left. How many sweaters were there in the shop at first?
|
Sweaters |
Coats |
Before |
10 u |
7 u + 63 |
Change |
- 3 u |
- 63 |
After |
7 u |
7 u |
30% =
30100 =
310There were 75 more coats than sweaters at first. If another 75 sweaters were added at first, the number of sweaters and coats would be the same.
10 u + 75 = 7 u + 63
10 u - 7 u = 63 - 75
3 u = -12
1 u = -12 ÷ 3 = -4
Number of sweaters in the shop at first
= 10 u
= 10 x -4
= -40
Answer(s): -40