Xandra and Kathy have 504 cards altogether. Kathy has five times as many cards as Xandra. How many cards must Kathy give to Xandra so that they have the same number of cards?
|
Xandra |
Kathy |
Total |
Before |
1 u |
5 u |
504 |
Change |
+ ? |
- ? |
|
After |
252 |
252 |
504 |
Total number of cards that Xandra and Kathy have
= 1 u + 5 u
= 6 u
6 u = 504
1 u = 504 ÷ 6 = 84
Number of cards that Xandra and Kathy each has in the end
= 504 ÷ 2
= 252
Number of cards that Kathy must give to Xandra
= 252 - 84
= 168
Answer(s): 168