On a shelf, there were 62 shirts and hoodies. Asher spilt hot coffee on the shelf and stained 50% of the hoodies and 10% of the shirts. If 43 shirts and hoodies were still clean, how many stained hoodies were there?
| |
Shirts |
Hoodies |
Total |
| Stained |
1 u |
1 p |
19 |
| Clean |
9 u |
1 p |
43 |
| Total |
10 u |
2 p |
62 |
50% =
50100 =
12 10% =
10100 =
110 Number of stained clothes
= 62 - 43
= 19
9 u + 1 p = 43
1 p = 43 - 9 u --- (1)
1 u + 1 p = 19
1 p = 19 - 1 u --- (2)
(2) - (1)
19 - 1 u = 43 - 9 u
9 u - 1 u = 43 - 19
8 u = 24
1 u = 24 ÷ 8 = 3
Number of stained hoodies
= 19 - 1 u
= 19 - 3
= 16
Answer(s): 16
