Liam and Ian had a total of 144 buttons. Ian had half as many buttons as Liam. How many buttons must Liam give to Ian so they have an equal number of buttons?
|
Liam |
Ian |
Total |
Before |
2 u |
1 u |
144 |
Change |
- ? |
+ ? |
|
After |
1 |
1 |
|
Total number of buttons at first = 3 u
1 u = 144 ÷ 3 = 48
Liam and Ian have an equal number of buttons in the end.
Number of buttons that Ian has in the end
= 144 ÷ 2
= 72
Number of buttons that Liam must give to Ian
= 72 - 48
= 24
Answer(s): 24