PSLE Diana had 80 post-it notes and Ivory had 18 post-it notes. After Diana gave some of her post-it notes to Ivory, the number of post-it notes Diana and Ivory had was in the ratio 2 : 5. How many post-it notes did Diana have in the end?
|
Diana |
Ivory |
Total |
Before |
80 |
18 |
98 |
Change |
- ? |
+ ? |
|
After |
2 u |
5 u |
7 u |
Total number of post-it notes
= 80 + 18
= 98
Total number of post-it notes
= 2 u + 5 u
= 7 u
7 u = 98
1 u = 98 ÷ 7 = 14
Number of post-it notes that Diana had in the end
= 2 u
= 2 x 14
= 28
Answer(s): 28