Gillian and Usha had an equal number of chocolate bars. After Gillian bought another 22 chocolate bars and Usha bought another 4 chocolate bars, Gillian had thrice as many chocolate bars as Usha. Find the number of chocolate bars that each of them had at first.
| |
Gillian |
Usha |
| Before |
3 u - 22 |
1 u - 4 |
| Change |
+ 22 |
+ 4 |
| After |
3 u |
1 u |
The number of chocolate bars that Gillian and Usha had at first is the same.
3 u - 22 = 1 u - 4
3 u - 1 u = 22 - 4
2 u = 18
1 u = 18 ÷ 2 = 9
Number of chocolate bars that each had at first
= 9 - 4
= 5
Answer(s): 5
