PSLE Shannon had 47 bookmarks and Natalie had 23 bookmarks. After Shannon gave some of her bookmarks to Natalie, the number of bookmarks Shannon and Natalie had was in the ratio 3 : 4. How many bookmarks did Shannon have in the end?
|
Shannon |
Natalie |
Total |
Before |
47 |
23 |
70 |
Change |
- ? |
+ ? |
|
After |
3 u |
4 u |
7 u |
Total number of bookmarks
= 47 + 23
= 70
Total number of bookmarks
= 3 u + 4 u
= 7 u
7 u = 70
1 u = 70 ÷ 7 = 10
Number of bookmarks that Shannon had in the end
= 3 u
= 3 x 10
= 30
Answer(s): 30