Usha bought thrice as many muffins as Oscar. After Usha ate 4 muffins, she had 12 more muffins than Oscar. How many muffins did they buy altogether?
| |
Usha |
Oscar |
Total |
| Before |
3 u |
1 u |
4 u |
| Change |
- 4 |
|
|
| After |
3 u - 4 |
1 u |
|
The number of muffins that Oscar had remains unchanged.
If Oscar had another 12 muffins in the end, the number of muffins that Usha and Oscar had would be the same.
3 u - 4 = 1 u + 12
3 u - 1 u = 12 + 4
2 u = 16
1 u = 16 ÷ 2 = 8
Total number of muffins
= 3 u + 1 u
= 4 u
= 4 x 8
= 32
Answer(s): 32
