Fred is 8 years older than Mark. 14 years ago, the sum of their age was 50. How old is Mark now?
| |
Fred |
Mark |
Difference |
Total |
| Before |
1 u + 8 |
1 u |
8 |
50 |
| Change |
+ 14 |
+ 14 |
|
+ 28 |
| After |
1 u + 22 |
1 u + 14 |
8 |
2 u + 36 |
The difference in the age between Fred and Mark remains unchanged.
Mark's current age = 1 u
Fred's current age = 1 u + 8
Combined age of Fred and Johny 14 years ago
= 1 u + 1 u + 8
= 2 u + 8
2 u + 8 = 50
2 u = 50 - 8
2 u = 42
1 u = 42 ÷ 2 = 21
Mark's current age
= 1 u + 14
= 21 + 14
= 35
Answer(s): 35
