PSLE Sabrina had 46 post-it notes and Winnie had 34 post-it notes. After Sabrina gave some of her post-it notes to Winnie, the number of post-it notes Sabrina and Winnie had was in the ratio 3 : 5. How many post-it notes did Sabrina have in the end?
|
Sabrina |
Winnie |
Total |
Before |
46 |
34 |
80 |
Change |
- ? |
+ ? |
|
After |
3 u |
5 u |
8 u |
Total number of post-it notes
= 46 + 34
= 80
Total number of post-it notes
= 3 u + 5 u
= 8 u
8 u = 80
1 u = 80 ÷ 8 = 10
Number of post-it notes that Sabrina had in the end
= 3 u
= 3 x 10
= 30
Answer(s): 30