Rachel and Jean had an equal number of chocolate bars. After Rachel bought another 30 chocolate bars and Jean bought another 8 chocolate bars, Rachel had thrice as many chocolate bars as Jean. Find the number of chocolate bars that each of them had at first.
| |
Rachel |
Jean |
| Before |
3 u - 30 |
1 u - 8 |
| Change |
+ 30 |
+ 8 |
| After |
3 u |
1 u |
The number of chocolate bars that Rachel and Jean had at first is the same.
3 u - 30 = 1 u - 8
3 u - 1 u = 30 - 8
2 u = 22
1 u = 22 ÷ 2 = 11
Number of chocolate bars that each had at first
= 11 - 8
= 3
Answer(s): 3
