Cody and Xuan had the same number of mochi balls. After Xuan gave away 20 mochi balls and Cody gave away 50 mochi balls, Xuan had 4 times as many mochi balls as Cody. How many mochi balls did each of them have at first?
| |
Cody |
Xuan |
| Before |
1 u + 50 |
4 u + 20 |
| Change |
- 50 |
- 20 |
| After |
1 u |
4 u |
The number of mochi balls that Cody and Xuan had at first is the same.
4 u + 20 = 1 u + 50
4 u - 1 u = 50 - 20
3 u = 30
1 u = 30 ÷ 3 = 10
Number of mochi balls that each of them had at first
= 1 u + 50
= 10 + 50
= 60
Answer(s): 60
