Archie and Carl had a total of 108 coins. Carl had half as many coins as Archie. How many coins must Archie give to Carl so they have an equal number of coins?
| |
Archie |
Carl |
Total |
| Before |
2 u |
1 u |
108 |
| Change |
- ? |
+ ? |
|
| After |
1 |
1 |
|
Total number of coins at first = 3 u
1 u = 108 ÷ 3 = 36
Archie and Carl have an equal number of coins in the end.
Number of coins that Carl has in the end
= 108 ÷ 2
= 54
Number of coins that Archie must give to Carl
= 54 - 36
= 18
Answer(s): 18
