PSLE Xuan had 48 post-it notes and Ivory had 12 post-it notes. After Xuan gave some of her post-it notes to Ivory, the number of post-it notes Xuan and Ivory had was in the ratio 2 : 4. How many post-it notes did Xuan have in the end?
|
Xuan |
Ivory |
Total |
Before |
48 |
12 |
60 |
Change |
- ? |
+ ? |
|
After |
2 u |
4 u |
6 u |
Total number of post-it notes
= 48 + 12
= 60
Total number of post-it notes
= 2 u + 4 u
= 6 u
6 u = 60
1 u = 60 ÷ 6 = 10
Number of post-it notes that Xuan had in the end
= 2 u
= 2 x 10
= 20
Answer(s): 20