On a shelf, there were 204 sweaters and blouses. Sean spilt hot milk on the shelf and stained 50% of the blouses and 10% of the sweaters. If 182 sweaters and blouses were still clean, how many stained blouses were there?
| |
Sweaters |
Blouses |
Total |
| Stained |
1 u |
1 p |
22 |
| Clean |
9 u |
1 p |
182 |
| Total |
10 u |
2 p |
204 |
50% =
50100 =
12 10% =
10100 =
110 Number of stained clothes
= 204 - 182
= 22
9 u + 1 p = 182
1 p = 182 - 9 u --- (1)
1 u + 1 p = 22
1 p = 22 - 1 u --- (2)
(2) - (1)
22 - 1 u = 182 - 9 u
9 u - 1 u = 182 - 22
8 u = 160
1 u = 160 ÷ 8 = 20
Number of stained blouses
= 22 - 1 u
= 22 - 20
= 2
Answer(s): 2
