PSLE Esther had 57 bookmarks and Xandra had 24 bookmarks. After Esther gave some of her bookmarks to Xandra, the number of bookmarks Esther and Xandra had was in the ratio 4 : 5. How many bookmarks did Xandra have in the end?
|
Esther |
Xandra |
Total |
Before |
57 |
24 |
81 |
Change |
- ? |
+ ? |
|
After |
4 u |
5 u |
9 u |
Total number of bookmarks
= 57 + 24
= 81
Total number of bookmarks
= 4 u + 5 u
= 9 u
9 u = 81
1 u = 81 ÷ 9 = 9
Number of bookmarks that Xandra had in the end
= 5 u
= 5 x 9
= 45
Answer(s): 45