PSLE Dana had 65 post-it notes and Xylia had 19 post-it notes. After Dana gave some of her post-it notes to Xylia, the number of post-it notes Dana and Xylia had was in the ratio 2 : 5. How many post-it notes did Dana have in the end?
|
Dana |
Xylia |
Total |
Before |
65 |
19 |
84 |
Change |
- ? |
+ ? |
|
After |
2 u |
5 u |
7 u |
Total number of post-it notes
= 65 + 19
= 84
Total number of post-it notes
= 2 u + 5 u
= 7 u
7 u = 84
1 u = 84 ÷ 7 = 12
Number of post-it notes that Dana had in the end
= 2 u
= 2 x 12
= 24
Answer(s): 24