Archie and Gem had the same number of mochi balls. After Gem gave away 18 mochi balls and Archie gave away 51 mochi balls, Gem had 2 times as many mochi balls as Archie. How many mochi balls did each of them have at first?
| |
Archie |
Gem |
| Before |
1 u + 51 |
2 u + 18 |
| Change |
- 51 |
- 18 |
| After |
1 u |
2 u |
The number of mochi balls that Archie and Gem had at first is the same.
2 u + 18 = 1 u + 51
2 u - 1 u = 51 - 18
1 u = 33
1 u = 33 ÷ 1 = 33
Number of mochi balls that each of them had at first
= 1 u + 51
= 33 + 51
= 84
Answer(s): 84
