PSLE Olivia had 67 bookmarks and Raeann had 23 bookmarks. After Olivia gave some of her bookmarks to Raeann, the number of bookmarks Olivia and Raeann had was in the ratio 2 : 3. How many bookmarks did Olivia have in the end?
|
Olivia |
Raeann |
Total |
Before |
67 |
23 |
90 |
Change |
- ? |
+ ? |
|
After |
2 u |
3 u |
5 u |
Total number of bookmarks
= 67 + 23
= 90
Total number of bookmarks
= 2 u + 3 u
= 5 u
5 u = 90
1 u = 90 ÷ 5 = 18
Number of bookmarks that Olivia had in the end
= 2 u
= 2 x 18
= 36
Answer(s): 36