PSLE The ratio of the number of blazers to that of blouses in a boutique was 5 : 3 in the end. After 36 blouses were sold, the ratio of the number of blazers to that of blouses became 7 : 3. What was the total number of blazers and blouses in the boutique in the end?
|
Blazers |
Blouses |
Total |
Before |
5x7 = 35 u |
3x7 = 21 u |
56 u |
Change |
|
- 36 |
|
After |
7x5 = 35 u |
3x5 = 15 u |
50 u |
The number of blazers remains unchanged. Make the number of blazers the same.
LCM of 7 and 5 is 35.
Number of blouses sold
= 21 u - 15 u
= 6 u
1 u = 36 ÷ 6 = 6
Total number of blazers and blouses in the end
= 35 u + 15 u
= 50 u
= 50 x 6
= 300
Answer(s): 300