Shiyun and Anna shared a box of buttons. Shiyun had 82% of the total buttons. if Shiyun gave 128 of her buttons to Anna, both would have the same number of buttons. How many buttons did Anna have?
| |
Shiyun |
Anna |
Total |
| Before |
82% |
18% |
100% |
| Change |
- 32% |
+ 32% |
|
| After |
50% |
50% |
100% |
Total number of buttons that Shiyun and Anna shared = 100%
If Shiyun gave 128 buttons to Anna, both would have the same number of buttons.
Number of buttons that each would have in the end
= 100% ÷ 2
= 50%
Number of buttons that Shiyun gave to Anna
= 82% - 50%
= 32%
32% → 128
1% → 128 ÷ 32 = 4
Number of buttons that Anna had
= 18%
= 18 x 4
= 72
Answer(s): 72
