Daniel and Irene had the same number of chocolate bars. After Irene gave away 13 chocolate bars and Daniel gave away 51 chocolate bars, Irene had 3 times as many chocolate bars as Daniel. How many chocolate bars did each of them have at first?
| |
Daniel |
Irene |
| Before |
1 u + 51 |
3 u + 13 |
| Change |
- 51 |
- 13 |
| After |
1 u |
3 u |
The number of chocolate bars that Daniel and Irene had at first is the same.
3 u + 13 = 1 u + 51
3 u - 1 u = 51 - 13
2 u = 38
1 u = 38 ÷ 2 = 19
Number of chocolate bars that each of them had at first
= 1 u + 51
= 19 + 51
= 70
Answer(s): 70
