PSLE Opal had 41 bookmarks and Sabrina had 25 bookmarks. After Opal gave some of her bookmarks to Sabrina, the number of bookmarks Opal and Sabrina had was in the ratio 2 : 4. How many bookmarks did Opal have in the end?
|
Opal |
Sabrina |
Total |
Before |
41 |
25 |
66 |
Change |
- ? |
+ ? |
|
After |
2 u |
4 u |
6 u |
Total number of bookmarks
= 41 + 25
= 66
Total number of bookmarks
= 2 u + 4 u
= 6 u
6 u = 66
1 u = 66 ÷ 6 = 11
Number of bookmarks that Opal had in the end
= 2 u
= 2 x 11
= 22
Answer(s): 22