Dana and Mary shared a box of buttons. Dana had 83% of the total buttons. if Dana gave 297 of her buttons to Mary, both would have the same number of buttons. How many buttons did Mary have?
| |
Dana |
Mary |
Total |
| Before |
83% |
17% |
100% |
| Change |
- 33% |
+ 33% |
|
| After |
50% |
50% |
100% |
Total number of buttons that Dana and Mary shared = 100%
If Dana gave 297 buttons to Mary, 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 Dana gave to Mary
= 83% - 50%
= 33%
33% → 297
1% → 297 ÷ 33 = 9
Number of buttons that Mary had
= 17%
= 17 x 9
= 153
Answer(s): 153
