Xandra had 60 more cards than Kylie. After Kylie gave away
25 of her cards, Xandra had thrice as many cards as Kylie. How many cards did Kylie have at first?
| |
Xandra |
Kylie |
Comparing Xandra
and Kylie at first |
60 more |
|
| Before |
9 u |
5 u |
| Change |
|
- 2 u |
| After |
|
3 u |
Comparing Xandra
and Kylie in the end |
3x3 =
9 u |
1x3 =
3 u |
The number of cards that Xandra had at first and in the end remains unchanged. Make the number of cards that Xandra had the same. LCM of 9 and 3 is 9.
Number of cards that Xandra had more than Kylie at first
= 9 u - 5 u
= 4 u
4 u = 60
1 u = 60 ÷ 4 = 15
Number of cards that Kylie had at first
= 5 u
= 5 x 15
= 75
Answer(s): 75
