PSLE Gillian had 74 bookmarks and Natalie had 16 bookmarks. After Gillian gave some of her bookmarks to Natalie, the number of bookmarks Gillian and Natalie had was in the ratio 4 : 5. How many bookmarks did Gillian have in the end?
|
Gillian |
Natalie |
Total |
Before |
74 |
16 |
90 |
Change |
- ? |
+ ? |
|
After |
4 u |
5 u |
9 u |
Total number of bookmarks
= 74 + 16
= 90
Total number of bookmarks
= 4 u + 5 u
= 9 u
9 u = 90
1 u = 90 ÷ 9 = 10
Number of bookmarks that Gillian had in the end
= 4 u
= 4 x 10
= 40
Answer(s): 40