PSLE The ratio of the number of blouses to that of jumpsuits in a shop was 4 : 3 in the end. After 26 jumpsuits were sold, the ratio of the number of blouses to that of jumpsuits became 7 : 2. What was the total number of blouses and jumpsuits in the shop in the end?
|
Blouses |
Jumpsuits |
Total |
Before |
4x7 = 28 u |
3x7 = 21 u |
49 u |
Change |
|
- 26 |
|
After |
7x4 = 28 u |
2x4 = 8 u |
36 u |
The number of blouses remains unchanged. Make the number of blouses the same.
LCM of 7 and 4 is 28.
Number of jumpsuits sold
= 21 u - 8 u
= 13 u
1 u = 26 ÷ 13 = 2
Total number of blouses and jumpsuits in the end
= 28 u + 8 u
= 36 u
= 36 x 2
= 72
Answer(s): 72