There were 79 more skirts than shirts in a shop. After 72 skirts and 10% of the shirts were sold, there were an equal number of skirts and shirts left. How many shirts were there in the shop at first?
| |
Shirts |
Skirts |
| Before |
10 u |
9 u + 72 |
| Change |
- 1 u |
- 72 |
| After |
9 u |
9 u |
10% =
10100 =
110There were 79 more skirts than shirts at first. If another 79 shirts were added at first, the number of shirts and skirts would be the same.
10 u + 79 = 9 u + 72
10 u - 9 u = 72 - 79
1 u = -7
1 u = -7 ÷ 1 = -7
Number of shirts in the shop at first
= 10 u
= 10 x -7
= -70
Answer(s): -70
