On a shelf, there were 56 jackets and blouses. Harry spilt hot tea on the shelf and stained 50% of the blouses and 25% of the jackets. If 41 jackets and blouses were still clean, how many stained blouses were there?
| |
Jackets |
Blouses |
Total |
| Stained |
1 u |
1 p |
15 |
| Clean |
3 u |
1 p |
41 |
| Total |
4 u |
2 p |
56 |
50% =
50100 =
12 25% =
25100 =
14 Number of stained clothes
= 56 - 41
= 15
3 u + 1 p = 41
1 p = 41 - 3 u --- (1)
1 u + 1 p = 15
1 p = 15 - 1 u --- (2)
(2) - (1)
15 - 1 u = 41 - 3 u
3 u - 1 u = 41 - 15
2 u = 26
1 u = 26 ÷ 2 = 13
Number of stained blouses
= 15 - 1 u
= 15 - 13
= 2
Answer(s): 2
