PSLE The ratio of the number of skirts to that of jumpsuits in a boutique was 11 : 10 at first. After 203 jumpsuits were sold, the ratio of the number of skirts to that of jumpsuits became 4 : 1. What was the total number of skirts and jumpsuits in the boutique at first?
|
Skirts |
Jumpsuits |
Total |
Before |
11x4 = 44 u |
10x4 = 40 u |
84 u |
Change |
|
- 203 |
|
After |
4x11 = 44 u |
1x11 = 11 u |
55 u |
The number of skirts remains unchanged. Make the number of skirts the same.
LCM of 4 and 11 is 44.
Number of jumpsuits sold
= 40 u - 11 u
= 29 u
1 u = 203 ÷ 29 = 7
Total number of skirts and jumpsuits at first
= 44 u + 40 u
= 84 u
= 84 x 7
= 588
Answer(s): 588