PSLE Penelope had 47 post-it notes and Olivia had 31 post-it notes. After Penelope gave some of her post-it notes to Olivia, the number of post-it notes Penelope and Olivia had was in the ratio 2 : 4. How many post-it notes did Penelope have in the end?
|
Penelope |
Olivia |
Total |
Before |
47 |
31 |
78 |
Change |
- ? |
+ ? |
|
After |
2 u |
4 u |
6 u |
Total number of post-it notes
= 47 + 31
= 78
Total number of post-it notes
= 2 u + 4 u
= 6 u
6 u = 78
1 u = 78 ÷ 6 = 13
Number of post-it notes that Penelope had in the end
= 2 u
= 2 x 13
= 26
Answer(s): 26