Yen and Ivory had an equal number of mini cupcakes. After Yen bought another 25 mini cupcakes and Ivory bought another 4 mini cupcakes, Yen had four times as many mini cupcakes as Ivory. Find the number of mini cupcakes that each of them had at first.
| |
Yen |
Ivory |
| Before |
4 u - 25 |
1 u - 4 |
| Change |
+ 25 |
+ 4 |
| After |
4 u |
1 u |
The number of mini cupcakes that Yen and Ivory had at first is the same.
4 u - 25 = 1 u - 4
4 u - 1 u = 25 - 4
3 u = 21
1 u = 21 ÷ 3 = 7
Number of mini cupcakes that each had at first
= 7 - 4
= 3
Answer(s): 3
