Sebastian and Lucy had an equal number of mini cupcakes at first. After Sebastian bought another 9 mini cupcakes and Lucy lost 27 mini cupcakes, Sebastian had five times as many mini cupcakes as Lucy. Find the number of mini cupcakes each of them had at first.
| |
Sebastian |
Lucy |
| Before |
5 u - 9 |
1 u + 27 |
| Change |
+ 9 |
- 27 |
| After |
5 u |
1 u |
The number of mini cupcakes that Sebastian and Lucy at first is the same.
5 u - 9 = 1 u + 27
5 u - 1 u = 27 + 9
4 u = 36
1 u = 36 ÷ 4 = 9
Number of mini cupcakes that each of them had at first
= 1 u + 27
= 9 + 27
= 36
Answer(s): 36
