Pierre and Winnie had the same number of mini cupcakes. After Winnie gave away 15 mini cupcakes and Pierre gave away 51 mini cupcakes, Winnie had 3 times as many mini cupcakes as Pierre. How many mini cupcakes did each of them have at first?
| |
Pierre |
Winnie |
| Before |
1 u + 51 |
3 u + 15 |
| Change |
- 51 |
- 15 |
| After |
1 u |
3 u |
The number of mini cupcakes that Pierre and Winnie had at first is the same.
3 u + 15 = 1 u + 51
3 u - 1 u = 51 - 15
2 u = 36
1 u = 36 ÷ 2 = 18
Number of mini cupcakes that each of them had at first
= 1 u + 51
= 18 + 51
= 69
Answer(s): 69
