Irene and Emily had an equal number of erasers at first. After Irene gave 3 erasers to Emily, Emily had 30 erasers. How many erasers does Irene have in the end?
| |
Irene |
Emily |
| Before |
1 u |
1 u |
| Change |
- 3 |
+ 3 |
| After |
1 u - 3 |
30 |
Number of erasers that Emily had at first
= 30 - 3
= 27
1 u = 27
Number of erasers that Irene had at first = 27
Number of erasers that Irene had in the end
= 1 u - 3
= 27 - 3
= 24
Answer(s): 24
