PSLE Mary had 49 paperclips and Xandra had 23 paperclips. After Mary gave some of her paperclips to Xandra, the number of paperclips Mary and Xandra had was in the ratio 3 : 5. How many paperclips did Xandra have in the end?
|
Mary |
Xandra |
Total |
Before |
49 |
23 |
72 |
Change |
- ? |
+ ? |
|
After |
3 u |
5 u |
8 u |
Total number of paperclips
= 49 + 23
= 72
Total number of paperclips
= 3 u + 5 u
= 8 u
8 u = 72
1 u = 72 ÷ 8 = 9
Number of paperclips that Xandra had in the end
= 5 u
= 5 x 9
= 45
Answer(s): 45