PSLE Jaslyn had 75 post-it notes and Abi had 16 post-it notes. After Jaslyn gave some of her post-it notes to Abi, the number of post-it notes Jaslyn and Abi had was in the ratio 3 : 4. How many post-it notes did Jaslyn have in the end?
|
Jaslyn |
Abi |
Total |
Before |
75 |
16 |
91 |
Change |
- ? |
+ ? |
|
After |
3 u |
4 u |
7 u |
Total number of post-it notes
= 75 + 16
= 91
Total number of post-it notes
= 3 u + 4 u
= 7 u
7 u = 91
1 u = 91 ÷ 7 = 13
Number of post-it notes that Jaslyn had in the end
= 3 u
= 3 x 13
= 39
Answer(s): 39