Yesterday, Sam had 51 wafers and 74 cupcakes. This morning, he sold 25 wafers and bought some more cupcakes. Now he has thrice as many cupcakes as wafers. How many cupcakes did he buy today?
| |
Wafers |
Cupcakes |
| Before |
51 |
74 |
| Change |
- 25 |
+ ? |
| After |
1 u |
3 u |
Number of wafers in the end
= 51 - 25
= 26
1 u = 26
Number of cupcakes in the end
= 3 u
= 3 x 26
= 78
Number of cupcakes that Sam bought today
= 3 u - 74
= 78 - 74
= 4
Answer(s): 4
