Julian and Pamela shared some erasers equally. After Pamela bought 33 erasers and Julian gave 53 erasers away, they had 508 erasers left. How many erasers did each of them have at first?
| |
Julian |
Pamela |
Total |
| Before |
1 u |
1 u |
|
| Change |
+ 33 |
- 53 |
|
| After |
1 u + 33 |
1 u - 53 |
508 |
Julian and Pamela had the same number of erasers at first.
Total number of erasers in the end
= 1 u + 33 + 1 u - 53
= 1 u + 1 u + 33 - 53
= 2 u - 20
2 u - 20 = 508
2 u = 508 + 20
2 u = 528
1 u = 528 ÷ 2 = 264
Number of erasers that each of them had at first
= 1 u
= 264
Answer(s): 264
