Roshel and Dana shared a box of buttons. Roshel had 81% of the total buttons. if Roshel gave 310 of her buttons to Dana, both would have the same number of buttons. How many buttons did Dana have?
| |
Roshel |
Dana |
Total |
| Before |
81% |
19% |
100% |
| Change |
- 31% |
+ 31% |
|
| After |
50% |
50% |
100% |
Total number of buttons that Roshel and Dana shared = 100%
If Roshel gave 310 buttons to Dana, 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 Roshel gave to Dana
= 81% - 50%
= 31%
31% → 310
1% → 310 ÷ 31 = 10
Number of buttons that Dana had
= 19%
= 19 x 10
= 190
Answer(s): 190
