PSLE The ratio of the number of vests to that of jumpsuits in a factory outlet was 11 : 6 in the end. After 28 jumpsuits were sold, the ratio of the number of vests to that of jumpsuits became 3 : 1. What was the total number of vests and jumpsuits in the factory outlet in the end?
|
Vests |
Jumpsuits |
Total |
Before |
11x3 = 33 u |
6x3 = 18 u |
51 u |
Change |
|
- 28 |
|
After |
3x11 = 33 u |
1x11 = 11 u |
44 u |
The number of vests remains unchanged. Make the number of vests the same.
LCM of 3 and 11 is 33.
Number of jumpsuits sold
= 18 u - 11 u
= 7 u
1 u = 28 ÷ 7 = 4
Total number of vests and jumpsuits in the end
= 33 u + 11 u
= 44 u
= 44 x 4
= 176
Answer(s): 176