Pierre and Xylia shared some buttons equally. After Xylia bought 64 buttons and Pierre gave 176 buttons away, they had 324 buttons left. How many buttons did each of them have at first?
| |
Pierre |
Xylia |
Total |
| Before |
1 u |
1 u |
|
| Change |
+ 64 |
- 176 |
|
| After |
1 u + 64 |
1 u - 176 |
324 |
Pierre and Xylia had the same number of buttons at first.
Total number of buttons in the end
= 1 u + 64 + 1 u - 176
= 1 u + 1 u + 64 - 176
= 2 u - 112
2 u - 112 = 324
2 u = 324 + 112
2 u = 436
1 u = 436 ÷ 2 = 218
Number of buttons that each of them had at first
= 1 u
= 218
Answer(s): 218
