Gabby bought four times as many muffins as Gabriel. After Gabby ate 7 muffins, she had 11 more muffins than Gabriel. How many muffins did they buy altogether?
| |
Gabby |
Gabriel |
Total |
| Before |
4 u |
1 u |
5 u |
| Change |
- 7 |
|
|
| After |
4 u - 7 |
1 u |
|
The number of muffins that Gabriel had remains unchanged.
If Gabriel had another 11 muffins in the end, the number of muffins that Gabby and Gabriel had would be the same.
4 u - 7 = 1 u + 11
4 u - 1 u = 11 + 7
3 u = 18
1 u = 18 ÷ 3 = 6
Total number of muffins
= 4 u + 1 u
= 5 u
= 5 x 6
= 30
Answer(s): 30
