Tommy is 8 years older than Peter. 8 years ago, the sum of their age was 60. How old is Peter now?
| |
Tommy |
Peter |
Difference |
Total |
| Before |
1 u + 8 |
1 u |
8 |
60 |
| Change |
+ 8 |
+ 8 |
|
+ 16 |
| After |
1 u + 16 |
1 u + 8 |
8 |
2 u + 24 |
The difference in the age between Tommy and Peter remains unchanged.
Peter's current age = 1 u
Tommy's current age = 1 u + 8
Combined age of Tommy and Johny 8 years ago
= 1 u + 1 u + 8
= 2 u + 8
2 u + 8 = 60
2 u = 60 - 8
2 u = 52
1 u = 52 ÷ 2 = 26
Peter's current age
= 1 u + 8
= 26 + 8
= 34
Answer(s): 34
