Lucy and Cathy had an equal number of caramel apples. After Lucy bought another 29 caramel apples and Cathy bought another 7 caramel apples, Lucy had thrice as many caramel apples as Cathy. Find the number of caramel apples that each of them had at first.
| |
Lucy |
Cathy |
| Before |
3 u - 29 |
1 u - 7 |
| Change |
+ 29 |
+ 7 |
| After |
3 u |
1 u |
The number of caramel apples that Lucy and Cathy had at first is the same.
3 u - 29 = 1 u - 7
3 u - 1 u = 29 - 7
2 u = 22
1 u = 22 ÷ 2 = 11
Number of caramel apples that each had at first
= 11 - 7
= 4
Answer(s): 4
