Jack and Bryan had a total of 172 coins at first. After Jack bought 23 more coins and Bryan gave away 11 coins, Jack now has the same number of coins as Bryan. How many coins did Jack have at first?
| |
Jack |
Bryan |
Total |
| Before |
1 u - 23 |
1 u + 11 |
172 |
| Change |
+ 23 |
- 11 |
|
| After |
1 u |
1 u |
184 |
Total number of coins in the end
= 172 + 23 - 11
= 184
2 u = 184
1 u = 184 ÷ 2 = 92
Number of coins that Jack had in the end
= 1 u
= 92
Number of coins that Jack had at first
= 92 - 23
= 69
Answer(s): 69
