Ahmad and Will had a total of 151 erasers at first. After Ahmad bought 24 more erasers and Will gave away 17 erasers, Ahmad now has the same number of erasers as Will. How many erasers did Ahmad have at first?
| |
Ahmad |
Will |
Total |
| Before |
1 u - 24 |
1 u + 17 |
151 |
| Change |
+ 24 |
- 17 |
|
| After |
1 u |
1 u |
158 |
Total number of erasers in the end
= 151 + 24 - 17
= 158
2 u = 158
1 u = 158 ÷ 2 = 79
Number of erasers that Ahmad had in the end
= 1 u
= 79
Number of erasers that Ahmad had at first
= 79 - 24
= 55
Answer(s): 55
