Yoko had 18 more mochi balls than Elijah at first. After Elijah had eaten 10 of his mochi balls, Yoko had 5 times as many mochi balls as Elijah. How many mochi balls did Yoko and Elijah have in total at first?
| |
Yoko |
Elijah |
Total |
| Before |
1 u + 10 + 18 |
1 u + 10 |
6 u + 10 |
| Change |
|
- 10 |
|
| After |
5 u |
1 u |
|
The number of mochi balls that Yoko had at first remains unchanged.
5 u = 1 u + 10 + 18
5 u - 1 u = 28
4 u = 28
1 u = 28 ÷ 4 = 7
Number of mochi balls that they had at first
= 6 u + 10
= 6 x 7 + 10
= 42 + 10
= 52
Answer(s): 52
