Xuan and Usha have 414 buttons altogether. Usha has twice as many buttons as Xuan. How many buttons must Usha give to Xuan so that they have the same number of buttons?
| |
Xuan |
Usha |
Total |
| Before |
1 u |
2 u |
414 |
| Change |
+ ? |
- ? |
|
| After |
207 |
207 |
414 |
Total number of buttons that Xuan and Usha have
= 1 u + 2 u
= 3 u
3 u = 414
1 u = 414 ÷ 3 = 138
Number of buttons that Xuan and Usha each has in the end
= 414 ÷ 2
= 207
Number of buttons that Usha must give to Xuan
= 207 - 138
= 69
Answer(s): 69
