PSLE Jane had 77 bookmarks and Kathy had 35 bookmarks. After Jane gave some of her bookmarks to Kathy, the number of bookmarks Jane and Kathy had was in the ratio 2 : 5. How many bookmarks did Kathy have in the end?
|
Jane |
Kathy |
Total |
Before |
77 |
35 |
112 |
Change |
- ? |
+ ? |
|
After |
2 u |
5 u |
7 u |
Total number of bookmarks
= 77 + 35
= 112
Total number of bookmarks
= 2 u + 5 u
= 7 u
7 u = 112
1 u = 112 ÷ 7 = 16
Number of bookmarks that Kathy had in the end
= 5 u
= 5 x 16
= 80
Answer(s): 80