PSLE The ratio of the number of windbreakers to that of blouses in a shopping centre was 8 : 5 in the end. After 116 blouses were sold, the ratio of the number of windbreakers to that of blouses became 9 : 2. What was the total number of windbreakers and blouses in the shopping centre in the end?
|
Windbreakers |
Blouses |
Total |
Before |
8x9 = 72 u |
5x9 = 45 u |
117 u |
Change |
|
- 116 |
|
After |
9x8 = 72 u |
2x8 = 16 u |
88 u |
The number of windbreakers remains unchanged. Make the number of windbreakers the same.
LCM of 9 and 8 is 72.
Number of blouses sold
= 45 u - 16 u
= 29 u
1 u = 116 ÷ 29 = 4
Total number of windbreakers and blouses in the end
= 72 u + 16 u
= 88 u
= 88 x 4
= 352
Answer(s): 352