PSLE The ratio of the number of coats to that of jumpsuits in a factory outlet was 2 : 1 in the end. After 14 jumpsuits were sold, the ratio of the number of coats to that of jumpsuits became 9 : 1. What was the total number of coats and jumpsuits in the factory outlet in the end?
|
Coats |
Jumpsuits |
Total |
Before |
2x9 = 18 u |
1x9 = 9 u |
27 u |
Change |
|
- 14 |
|
After |
9x2 = 18 u |
1x2 = 2 u |
20 u |
The number of coats remains unchanged.
Make the number of coats the same.
LCM of 1 and 2 is 18.
Number of jumpsuits sold
= 9 u - 2 u
= 7 u
1 u = 14 ÷ 7 = 2
Total number of coats and jumpsuits in the end
= 18 u + 2 u
= 20 u
= 20 x 2
= 40
Answer(s): 40