When Mr Jenson is 26 years old, his cousin is 6 years old. In how many years will he be 3 times as old as his cousin?
|
Mr Jenson |
His cousin |
Difference |
Before |
26 |
6 |
20 |
Change |
+ ? |
+ ? |
|
After |
3 u |
1 u |
2 u |
The difference in the age between Mr Jenson and his cousin at first and in the end remains the same.
Difference in the age between Mr Jenson and his cousin
= 3 u - 1 u
= 2 u
2 u = 26 - 6
2 u = 20
1 u = 20 ÷ 2 = 10
Number of years' time so Mr Jenson will be 3 times as old as his cousin
= 10 - 6
= 4
Answer(s): 4