PSLE Joelle had 55 paperclips and Dana had 15 paperclips. After Joelle gave some of her paperclips to Dana, the number of paperclips Joelle and Dana had was in the ratio 3 : 4. How many paperclips did Dana have in the end?
|
Joelle |
Dana |
Total |
Before |
55 |
15 |
70 |
Change |
- ? |
+ ? |
|
After |
3 u |
4 u |
7 u |
Total number of paperclips
= 55 + 15
= 70
Total number of paperclips
= 3 u + 4 u
= 7 u
7 u = 70
1 u = 70 ÷ 7 = 10
Number of paperclips that Dana had in the end
= 4 u
= 4 x 10
= 40
Answer(s): 40