Peter and Emma had the same number of chocolate bars. After Emma gave away 18 chocolate bars and Peter gave away 51 chocolate bars, Emma had 2 times as many chocolate bars as Peter. How many chocolate bars did each of them have at first?
| |
Peter |
Emma |
| Before |
1 u + 51 |
2 u + 18 |
| Change |
- 51 |
- 18 |
| After |
1 u |
2 u |
The number of chocolate bars that Peter and Emma 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 chocolate bars that each of them had at first
= 1 u + 51
= 33 + 51
= 84
Answer(s): 84
