PSLE The ratio of the number of shirts to that of jumpsuits in a shopping centre was 5 : 4 at first. After 8 jumpsuits were sold, the ratio of the number of shirts to that of jumpsuits became 11 : 8. What was the total number of shirts and jumpsuits in the shopping centre at first?
|
Shirts |
Jumpsuits |
Total |
Before |
5x11 = 55 u |
4x11 = 44 u |
99 u |
Change |
|
- 8 |
|
After |
11x5 = 55 u |
8x5 = 40 u |
95 u |
The number of shirts remains unchanged. Make the number of shirts the same.
LCM of 11 and 5 is 55.
Number of jumpsuits sold
= 44 u - 40 u
= 4 u
1 u = 8 ÷ 4 = 2
Total number of shirts and jumpsuits at first
= 55 u + 44 u
= 99 u
= 99 x 2
= 198
Answer(s): 198