Dylan and Dana shared some stamps equally. After Dana bought 99 stamps and Dylan gave 133 stamps away, they had 488 stamps left. How many stamps did each of them have at first?
| |
Dylan |
Dana |
Total |
| Before |
1 u |
1 u |
|
| Change |
+ 99 |
- 133 |
|
| After |
1 u + 99 |
1 u - 133 |
488 |
Dylan and Dana had the same number of stamps at first.
Total number of stamps in the end
= 1 u + 99 + 1 u - 133
= 1 u + 1 u + 99 - 133
= 2 u - 34
2 u - 34 = 488
2 u = 488 + 34
2 u = 522
1 u = 522 ÷ 2 = 261
Number of stamps that each of them had at first
= 1 u
= 261
Answer(s): 261
