Yesterday, Luis had 54 wafers and 68 cookies. This morning, he sold 16 wafers and bought some more cookies. Now he has thrice as many cookies as wafers. How many cookies did he buy today?
| |
Wafers |
Cookies |
| Before |
54 |
68 |
| Change |
- 16 |
+ ? |
| After |
1 u |
3 u |
Number of wafers in the end
= 54 - 16
= 38
1 u = 38
Number of cookies in the end
= 3 u
= 3 x 38
= 114
Number of cookies that Luis bought today
= 3 u - 68
= 114 - 68
= 46
Answer(s): 46
