Xuan and Barbara have 564 buttons altogether. Barbara has five times as many buttons as Xuan. How many buttons must Barbara give to Xuan so that they have the same number of buttons?
|
Xuan |
Barbara |
Total |
Before |
1 u |
5 u |
564 |
Change |
+ ? |
- ? |
|
After |
282 |
282 |
564 |
Total number of buttons that Xuan and Barbara have
= 1 u + 5 u
= 6 u
6 u = 564
1 u = 564 ÷ 6 = 94
Number of buttons that Xuan and Barbara each has in the end
= 564 ÷ 2
= 282
Number of buttons that Barbara must give to Xuan
= 282 - 94
= 188
Answer(s): 188