On a shelf, there were 68 shirts and blouses. Vaidev spilt juice on the shelf and stained 50% of the blouses and 10% of the shirts. If 46 shirts and blouses were still clean, how many clean blouses were there?
| |
Shirts |
Blouses |
Total |
| Stained |
1 u |
1 p |
22 |
| Clean |
9 u |
1 p |
46 |
| Total |
10 u |
2 p |
68 |
50% =
50100 =
12 10% =
10100 =
110 Number of stained clothes
= 68 - 46
= 22
9 u + 1 p = 46
1 p = 46 - 9 u --- (1)
1 u + 1 p = 22
1 p = 22 - 1 u --- (2)
(2) - (1)
22 - 1 u = 46 - 9 u
9 u - 1 u = 46 - 22
8 u = 24
1 u = 24 ÷ 8 = 3
Number of clean blouses is the same as the number of stained blouses.
Number of clean blouses
= 22 - 1 u
= 22 - 3
= 19
Answer(s): 19
