Oscar and Cathy had the same number of mochi balls. After Cathy gave away 20 mochi balls and Oscar gave away 35 mochi balls, Cathy had 6 times as many mochi balls as Oscar. How many mochi balls did each of them have at first?
| |
Oscar |
Cathy |
| Before |
1 u + 35 |
6 u + 20 |
| Change |
- 35 |
- 20 |
| After |
1 u |
6 u |
The number of mochi balls that Oscar and Cathy had at first is the same.
6 u + 20 = 1 u + 35
6 u - 1 u = 35 - 20
5 u = 15
1 u = 15 ÷ 5 = 3
Number of mochi balls that each of them had at first
= 1 u + 35
= 3 + 35
= 38
Answer(s): 38
