Linda and Vanessa had an equal number of mini cupcakes. After Linda bought another 29 mini cupcakes and Vanessa bought another 7 mini cupcakes, Linda had thrice as many mini cupcakes as Vanessa. Find the number of mini cupcakes that each of them had at first.
| |
Linda |
Vanessa |
| Before |
3 u - 29 |
1 u - 7 |
| Change |
+ 29 |
+ 7 |
| After |
3 u |
1 u |
The number of mini cupcakes that Linda and Vanessa 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 mini cupcakes that each had at first
= 11 - 7
= 4
Answer(s): 4
