Julian is 12 years older than Ivan. 12 years ago, the sum of their age was 50. How old is Ivan now?
| |
Julian |
Ivan |
Difference |
Total |
| Before |
1 u + 12 |
1 u |
12 |
50 |
| Change |
+ 12 |
+ 12 |
|
+ 24 |
| After |
1 u + 24 |
1 u + 12 |
12 |
2 u + 36 |
The difference in the age between Julian and Ivan remains unchanged.
Ivan's current age = 1 u
Julian's current age = 1 u + 12
Combined age of Julian and Johny 12 years ago
= 1 u + 1 u + 12
= 2 u + 12
2 u + 12 = 50
2 u = 50 - 12
2 u = 38
1 u = 38 ÷ 2 = 19
Ivan's current age
= 1 u + 12
= 19 + 12
= 31
Answer(s): 31
