Gabriel and Ivan had a total of 102 buttons. Ivan had half as many buttons as Gabriel. How many buttons must Gabriel give to Ivan so they have an equal number of buttons?
| |
Gabriel |
Ivan |
Total |
| Before |
2 u |
1 u |
102 |
| Change |
- ? |
+ ? |
|
| After |
1 |
1 |
|
Total number of buttons at first = 3 u
1 u = 102 ÷ 3 = 34
Gabriel and Ivan have an equal number of buttons in the end.
Number of buttons that Ivan has in the end
= 102 ÷ 2
= 51
Number of buttons that Gabriel must give to Ivan
= 51 - 34
= 17
Answer(s): 17
