PSLE The ratio of the number of vests to that of jumpsuits in a shop was 10 : 7 in the end. After 44 jumpsuits were sold, the ratio of the number of vests to that of jumpsuits became 3 : 1. What was the total number of vests and jumpsuits in the shop in the end?
|
Vests |
Jumpsuits |
Total |
Before |
10x3 = 30 u |
7x3 = 21 u |
51 u |
Change |
|
- 44 |
|
After |
3x10 = 30 u |
1x10 = 10 u |
40 u |
The number of vests remains unchanged. Make the number of vests the same.
LCM of 3 and 10 is 30.
Number of jumpsuits sold
= 21 u - 10 u
= 11 u
1 u = 44 ÷ 11 = 4
Total number of vests and jumpsuits in the end
= 30 u + 10 u
= 40 u
= 40 x 4
= 160
Answer(s): 160