Sean is 12 years older than Ben. 12 years ago, the sum of their age was 74. How old is Ben now?
| |
Sean |
Ben |
Difference |
Total |
| Before |
1 u + 12 |
1 u |
12 |
74 |
| Change |
+ 12 |
+ 12 |
|
+ 24 |
| After |
1 u + 24 |
1 u + 12 |
12 |
2 u + 36 |
The difference in the age between Sean and Ben remains unchanged.
Ben's current age = 1 u
Sean's current age = 1 u + 12
Combined age of Sean and Johny 12 years ago
= 1 u + 1 u + 12
= 2 u + 12
2 u + 12 = 74
2 u = 74 - 12
2 u = 62
1 u = 62 ÷ 2 = 31
Ben's current age
= 1 u + 12
= 31 + 12
= 43
Answer(s): 43
