Andy and Olivia had the same number of mini cupcakes. After Olivia gave away 18 mini cupcakes and Andy gave away 38 mini cupcakes, Olivia had 2 times as many mini cupcakes as Andy. How many mini cupcakes did each of them have at first?
| |
Andy |
Olivia |
| Before |
1 u + 38 |
2 u + 18 |
| Change |
- 38 |
- 18 |
| After |
1 u |
2 u |
The number of mini cupcakes that Andy and Olivia had at first is the same.
2 u + 18 = 1 u + 38
2 u - 1 u = 38 - 18
1 u = 20
1 u = 20 ÷ 1 = 20
Number of mini cupcakes that each of them had at first
= 1 u + 38
= 20 + 38
= 58
Answer(s): 58
