PSLE Cathy had 52 post-it notes and Jade had 33 post-it notes. After Cathy gave some of her post-it notes to Jade, the number of post-it notes Cathy and Jade had was in the ratio 2 : 3. How many post-it notes did Cathy have in the end?
|
Cathy |
Jade |
Total |
Before |
52 |
33 |
85 |
Change |
- ? |
+ ? |
|
After |
2 u |
3 u |
5 u |
Total number of post-it notes
= 52 + 33
= 85
Total number of post-it notes
= 2 u + 3 u
= 5 u
5 u = 85
1 u = 85 ÷ 5 = 17
Number of post-it notes that Cathy had in the end
= 2 u
= 2 x 17
= 34
Answer(s): 34