There were 70 more skirts than sweaters in a shop. After 73 skirts and 30% of the sweaters were sold, there were an equal number of skirts and sweaters left. How many sweaters were there in the shop at first?
| |
Sweaters |
Skirts |
| Before |
10 u |
7 u + 73 |
| Change |
- 3 u |
- 73 |
| After |
7 u |
7 u |
30% =
30100 =
310There were 70 more skirts than sweaters at first. If another 70 sweaters were added at first, the number of sweaters and skirts would be the same.
10 u + 70 = 7 u + 73
10 u - 7 u = 73 - 70
3 u = 3
1 u = 3 ÷ 3 = 1
Number of sweaters in the shop at first
= 10 u
= 10 x 1
= 10
Answer(s): 10
