Emma had 4 times as many erasers as Gabby at first. After Emma gave 36 erasers to Gabby, they each had the same number of erasers in the end. How many erasers did Emma have at first?
| |
Emma |
Gabby |
| Before |
4 u |
1 u |
| Change |
- 36 |
+ 36 |
| After |
4 u - 36 |
1 u + 36 |
Comparing Emma and
Gabby in the end |
1 |
1 |
The number of erasers that Emma and Gabby had in the end is equal.
4 u - 36 = 1 u + 36
4 u - 1 u = 36 + 36
3 u = 72
1 u = 24
Number of erasers that Emma had at first
= 4 u
= 4 x 24
= 96
Answer(s): 96
