Ben and Gillian shared some erasers equally. After Gillian bought 97 erasers and Ben gave 191 erasers away, they had 352 erasers left. How many erasers did each of them have at first?
| |
Ben |
Gillian |
Total |
| Before |
1 u |
1 u |
|
| Change |
+ 97 |
- 191 |
|
| After |
1 u + 97 |
1 u - 191 |
352 |
Ben and Gillian had the same number of erasers at first.
Total number of erasers in the end
= 1 u + 97 + 1 u - 191
= 1 u + 1 u + 97 - 191
= 2 u - 94
2 u - 94 = 352
2 u = 352 + 94
2 u = 446
1 u = 446 ÷ 2 = 223
Number of erasers that each of them had at first
= 1 u
= 223
Answer(s): 223
