Anna and Lily had an equal number of mochi balls at first. After Anna bought another 19 mochi balls and Lily lost 27 mochi balls, Anna had thrice as many mochi balls as Lily. Find the number of mochi balls each of them had at first.
| |
Anna |
Lily |
| Before |
3 u - 19 |
1 u + 27 |
| Change |
+ 19 |
- 27 |
| After |
3 u |
1 u |
The number of mochi balls that Anna and Lily at first is the same.
3 u - 19 = 1 u + 27
3 u - 1 u = 27 + 19
2 u = 46
1 u = 46 ÷ 2 = 23
Number of mochi balls that each of them had at first
= 1 u + 27
= 23 + 27
= 50
Answer(s): 50
