Gabriel and Hilda shared some buttons equally. After Hilda bought 85 buttons and Gabriel gave 155 buttons away, they had 440 buttons left. How many buttons did each of them have at first?
| |
Gabriel |
Hilda |
Total |
| Before |
1 u |
1 u |
|
| Change |
+ 85 |
- 155 |
|
| After |
1 u + 85 |
1 u - 155 |
440 |
Gabriel and Hilda had the same number of buttons at first.
Total number of buttons in the end
= 1 u + 85 + 1 u - 155
= 1 u + 1 u + 85 - 155
= 2 u - 70
2 u - 70 = 440
2 u = 440 + 70
2 u = 510
1 u = 510 ÷ 2 = 255
Number of buttons that each of them had at first
= 1 u
= 255
Answer(s): 255
