Yesterday, Mark had 65 cookies and 44 muffins. This morning, he sold 20 cookies and bought some more muffins. Now he has four times as many muffins as cookies. How many muffins did he buy today?
| |
Cookies |
Muffins |
| Before |
65 |
44 |
| Change |
- 20 |
+ ? |
| After |
1 u |
4 u |
Number of cookies in the end
= 65 - 20
= 45
1 u = 45
Number of muffins in the end
= 4 u
= 4 x 45
= 180
Number of muffins that Mark bought today
= 4 u - 44
= 180 - 44
= 136
Answer(s): 136
