PSLE The ratio of the number of dresses to that of blouses in a boutique was 7 : 5 in the end. After 126 blouses were sold, the ratio of the number of dresses to that of blouses became 5 : 1. What was the total number of dresses and blouses in the boutique in the end?
|
Dresses |
Blouses |
Total |
Before |
7x5 = 35 u |
5x5 = 25 u |
60 u |
Change |
|
- 126 |
|
After |
5x7 = 35 u |
1x7 = 7 u |
42 u |
The number of dresses remains unchanged.
Make the number of dresses the same.
LCM of 5 and 7 is 35.
Number of blouses sold
= 25 u - 7 u
= 18 u
1 u = 126 ÷ 18 = 7
Total number of dresses and blouses in the end
= 35 u + 7 u
= 42 u
= 42 x 7
= 294
Answer(s): 294