PSLE Jean had 56 bookmarks and Sarah had 21 bookmarks. After Jean gave some of her bookmarks to Sarah, the number of bookmarks Jean and Sarah had was in the ratio 2 : 5. How many bookmarks did Jean have in the end?
|
Jean |
Sarah |
Total |
Before |
56 |
21 |
77 |
Change |
- ? |
+ ? |
|
After |
2 u |
5 u |
7 u |
Total number of bookmarks
= 56 + 21
= 77
Total number of bookmarks
= 2 u + 5 u
= 7 u
7 u = 77
1 u = 77 ÷ 7 = 11
Number of bookmarks that Jean had in the end
= 2 u
= 2 x 11
= 22
Answer(s): 22