Vincent and Shannon had the same number of mini cupcakes. After Shannon gave away 21 mini cupcakes and Vincent gave away 50 mini cupcakes, Shannon had 2 times as many mini cupcakes as Vincent. How many mini cupcakes did each of them have at first?
| |
Vincent |
Shannon |
| Before |
1 u + 50 |
2 u + 21 |
| Change |
- 50 |
- 21 |
| After |
1 u |
2 u |
The number of mini cupcakes that Vincent and Shannon had at first is the same.
2 u + 21 = 1 u + 50
2 u - 1 u = 50 - 21
1 u = 29
1 u = 29 ÷ 1 = 29
Number of mini cupcakes that each of them had at first
= 1 u + 50
= 29 + 50
= 79
Answer(s): 79
