On a shelf, there were 182 skirts and jackets. Howard spilt hot orange juice on the shelf and stained 50% of the jackets and 10% of the skirts. If 159 skirts and jackets were still clean, how many stained jackets were there?
| |
Skirts |
Jackets |
Total |
| Stained |
1 u |
1 p |
23 |
| Clean |
9 u |
1 p |
159 |
| Total |
10 u |
2 p |
182 |
50% =
50100 =
12 10% =
10100 =
110 Number of stained clothes
= 182 - 159
= 23
9 u + 1 p = 159
1 p = 159 - 9 u --- (1)
1 u + 1 p = 23
1 p = 23 - 1 u --- (2)
(2) - (1)
23 - 1 u = 159 - 9 u
9 u - 1 u = 159 - 23
8 u = 136
1 u = 136 ÷ 8 = 17
Number of stained jackets
= 23 - 1 u
= 23 - 17
= 6
Answer(s): 6
