Charlie had 463 pens and Tammy had 399 pens. After Charlie gave Tammy some pens, both of them have the same number of pens. How many pens did Charlie give Tammy?
|
Charlie |
Tammy |
Difference |
Before |
463 |
399 |
64 |
Change |
- ? |
+ ? |
|
After |
1 u |
1 u |
0 |
The total number of pens remains unchanged after Charlie gave Tammy some pens.
The number of pens that each had in the end is the same.
Number of more pens that Charlie had than Tammy
= 463 - 399
= 64
Number of pens that Charlie gave Tammy
= 64 ÷ 2
= 32
Answer(s): 32