PSLE The ratio of the number of blouses to that of windbreakers in a factory outlet was 5 : 3 in the end. After 55 windbreakers were sold, the ratio of the number of blouses to that of windbreakers became 12 : 5. What was the total number of blouses and windbreakers in the factory outlet in the end?
|
Blouses |
Windbreakers |
Total |
Before |
5x12 = 60 u |
3x12 = 36 u |
96 u |
Change |
|
- 55 |
|
After |
12x5 = 60 u |
5x5 = 25 u |
85 u |
The number of blouses remains unchanged. Make the number of blouses the same.
LCM of 12 and 5 is 60.
Number of windbreakers sold
= 36 u - 25 u
= 11 u
1 u = 55 ÷ 11 = 5
Total number of blouses and windbreakers in the end
= 60 u + 25 u
= 85 u
= 85 x 5
= 425
Answer(s): 425