Japheth is 6 years older than Tommy. 12 years ago, the sum of their age was 70. How old is Tommy now?
| |
Japheth |
Tommy |
Difference |
Total |
| Before |
1 u + 6 |
1 u |
6 |
70 |
| Change |
+ 12 |
+ 12 |
|
+ 24 |
| After |
1 u + 18 |
1 u + 12 |
6 |
2 u + 30 |
The difference in the age between Japheth and Tommy remains unchanged.
Tommy's current age = 1 u
Japheth's current age = 1 u + 6
Combined age of Japheth and Johny 12 years ago
= 1 u + 1 u + 6
= 2 u + 6
2 u + 6 = 70
2 u = 70 - 6
2 u = 64
1 u = 64 ÷ 2 = 32
Tommy's current age
= 1 u + 12
= 32 + 12
= 44
Answer(s): 44
