Oliver had 477 cards and Fiona had 331 cards. After Oliver gave Fiona some cards, both of them have the same number of cards. How many cards did Oliver give Fiona?
|
Oliver |
Fiona |
Difference |
Before |
477 |
331 |
146 |
Change |
- ? |
+ ? |
|
After |
1 u |
1 u |
0 |
The total number of cards remains unchanged after Oliver gave Fiona some cards.
The number of cards that each had in the end is the same.
Number of more cards that Oliver had than Fiona
= 477 - 331
= 146
Number of cards that Oliver gave Fiona
= 146 ÷ 2
= 73
Answer(s): 73