Fiona and Erika had the same number of mochi balls at first. After Fiona received another 22 mochi balls and Erika gave away 50 mochi balls, Fiona had 3 times as many mochi balls as Erika. How many mochi balls did each of them have at first?
| |
Fiona |
Erika |
| Before |
3 u - 22 |
1 u + 50 |
| Change |
+ 22 |
- 50 |
| After |
3 u |
1 u |
Fiona and Erika had the same number of mochi balls at first.
3 u - 22 = 1 u + 50
3 u - 1 u = 50 + 22
2 u = 72
1 u = 72 ÷ 2 = 36
Number of mochi balls that each of them at first
= 36 + 50
= 86
Answer(s): 86
