PSLE The ratio of the number of jumpsuits to that of shirts in a boutique was 5 : 2 in the end. After 96 shirts were sold, the ratio of the number of jumpsuits to that of shirts became 11 : 2. What was the total number of jumpsuits and shirts in the boutique in the end?
|
Jumpsuits |
Shirts |
Total |
Before |
5x11 = 55 u |
2x11 = 22 u |
77 u |
Change |
|
- 96 |
|
After |
11x5 = 55 u |
2x5 = 10 u |
65 u |
The number of jumpsuits remains unchanged. Make the number of jumpsuits the same.
LCM of 11 and 5 is 55.
Number of shirts sold
= 22 u - 10 u
= 12 u
1 u = 96 ÷ 12 = 8
Total number of jumpsuits and shirts in the end
= 55 u + 10 u
= 65 u
= 65 x 8
= 520
Answer(s): 520