Fabian's age is
14 his brother's age now. In 40 years' time, his age will be
34 that of his brother's. How old is Fabian now?
|
Fabian |
Fabian's brother |
Difference |
Before |
1x1 = 1 u |
4x1 = 4 u |
3x1 = 3 u |
Change |
+ 40 |
+ 40 |
|
After |
3x3 = 9 u |
4x3 = 12 u |
1x3 = 3 u |
The difference in the age between Fabian and Fabian's brother remains unchanged. Make the difference in age the same. LCM of 3 and 1 is 3.
Increase in the age of Fabian
= 9 u - 1 u
= 8 u
8 u = 40
1 u = 40 ÷ 8 = 5
Fabian's age now
= 1 u
= 1 x 5
= 5
Answer(s): 5