When Mr Fabian is 19 years old, his niece is 5 years old. In how many years will he be 3 times as old as his niece?
| |
Mr Fabian |
His niece |
Difference |
| Before |
19 |
5 |
14 |
| Change |
+ ? |
+ ? |
|
| After |
3 u |
1 u |
2 u |
The difference in the age between Mr Fabian and his niece at first and in the end remains the same.
Difference in the age between Mr Fabian and his niece
= 3 u - 1 u
= 2 u
2 u = 19 - 5
2 u = 14
1 u = 14 ÷ 2 = 7
Number of years' time so Mr Fabian will be 3 times as old as his niece
= 7 - 5
= 2
Answer(s): 2
