Jonathan and Harris had an equal number of chocolate bars at first. After Jonathan bought another 4 chocolate bars and Harris lost 17 chocolate bars, Jonathan had four times as many chocolate bars as Harris. Find the number of chocolate bars each of them had at first.
| |
Jonathan |
Harris |
| Before |
4 u - 4 |
1 u + 17 |
| Change |
+ 4 |
- 17 |
| After |
4 u |
1 u |
The number of chocolate bars that Jonathan and Harris at first is the same.
4 u - 4 = 1 u + 17
4 u - 1 u = 17 + 4
3 u = 21
1 u = 21 ÷ 3 = 7
Number of chocolate bars that each of them had at first
= 1 u + 17
= 7 + 17
= 24
Answer(s): 24
