PSLE The ratio of the number of blazers to that of vests in a shopping centre was 3 : 2 in the end. After 34 vests were sold, the ratio of the number of blazers to that of vests became 10 : 1. What was the total number of blazers and vests in the shopping centre in the end?
|
Blazers |
Vests |
Total |
Before |
3x10 = 30 u |
2x10 = 20 u |
50 u |
Change |
|
- 34 |
|
After |
10x3 = 30 u |
1x3 = 3 u |
33 u |
The number of blazers remains unchanged. Make the number of blazers the same.
LCM of 10 and 3 is 30.
Number of vests sold
= 20 u - 3 u
= 17 u
1 u = 34 ÷ 17 = 2
Total number of blazers and vests in the end
= 30 u + 3 u
= 33 u
= 33 x 2
= 66
Answer(s): 66