Billy had 498 marbles and Dana had 380 marbles. After Billy gave Dana some marbles, both of them have the same number of marbles. How many marbles did Billy give Dana?
|
Billy |
Dana |
Difference |
Before |
498 |
380 |
118 |
Change |
- ? |
+ ? |
|
After |
1 u |
1 u |
0 |
The total number of marbles remains unchanged after Billy gave Dana some marbles.
The number of marbles that each had in the end is the same.
Number of more marbles that Billy had than Dana
= 498 - 380
= 118
Number of marbles that Billy gave Dana
= 118 ÷ 2
= 59
Answer(s): 59