Gem and Zoe have 426 cards altogether. Zoe has twice as many cards as Gem. How many cards must Zoe give to Gem so that they have the same number of cards?
| |
Gem |
Zoe |
Total |
| Before |
1 u |
2 u |
426 |
| Change |
+ ? |
- ? |
|
| After |
213 |
213 |
426 |
Total number of cards that Gem and Zoe have
= 1 u + 2 u
= 3 u
3 u = 426
1 u = 426 ÷ 3 = 142
Number of cards that Gem and Zoe each has in the end
= 426 ÷ 2
= 213
Number of cards that Zoe must give to Gem
= 213 - 142
= 71
Answer(s): 71
