Ella and Emily had an equal number of mochi balls at first. After Ella bought another 6 mochi balls and Emily lost 12 mochi balls, Ella had four times as many mochi balls as Emily. Find the number of mochi balls each of them had at first.
| |
Ella |
Emily |
| Before |
4 u - 6 |
1 u + 12 |
| Change |
+ 6 |
- 12 |
| After |
4 u |
1 u |
The number of mochi balls that Ella and Emily at first is the same.
4 u - 6 = 1 u + 12
4 u - 1 u = 12 + 6
3 u = 18
1 u = 18 ÷ 3 = 6
Number of mochi balls that each of them had at first
= 1 u + 12
= 6 + 12
= 18
Answer(s): 18
