PSLE Ivory had 60 post-it notes and Nora had 12 post-it notes. After Ivory gave some of her post-it notes to Nora, the number of post-it notes Ivory and Nora had was in the ratio 2 : 4. How many post-it notes did Ivory have in the end?
|
Ivory |
Nora |
Total |
Before |
60 |
12 |
72 |
Change |
- ? |
+ ? |
|
After |
2 u |
4 u |
6 u |
Total number of post-it notes
= 60 + 12
= 72
Total number of post-it notes
= 2 u + 4 u
= 6 u
6 u = 72
1 u = 72 ÷ 6 = 12
Number of post-it notes that Ivory had in the end
= 2 u
= 2 x 12
= 24
Answer(s): 24