Alexander and Raeann had an equal number of mochi balls at first. After Alexander bought another 15 mochi balls and Raeann lost 23 mochi balls, Alexander had thrice as many mochi balls as Raeann. Find the number of mochi balls each of them had at first.
| |
Alexander |
Raeann |
| Before |
3 u - 15 |
1 u + 23 |
| Change |
+ 15 |
- 23 |
| After |
3 u |
1 u |
The number of mochi balls that Alexander and Raeann at first is the same.
3 u - 15 = 1 u + 23
3 u - 1 u = 23 + 15
2 u = 38
1 u = 38 ÷ 2 = 19
Number of mochi balls that each of them had at first
= 1 u + 23
= 19 + 23
= 42
Answer(s): 42
