Valen and Bryan had a total of 214 buttons at first. After Valen bought 21 more buttons and Bryan gave away 11 buttons, Valen now has the same number of buttons as Bryan. How many buttons did Valen have at first?
|
Valen |
Bryan |
Total |
Before |
1 u - 21 |
1 u + 11 |
214 |
Change |
+ 21 |
- 11 |
|
After |
1 u |
1 u |
224 |
Total number of buttons in the end
= 214 + 21 - 11
= 224
2 u = 224
1 u = 224 ÷ 2 = 112
Number of buttons that Valen had in the end
= 1 u
= 112
Number of buttons that Valen had at first
= 112 - 21
= 91
Answer(s): 91