When Mr Ivan is 38 years old, his cousin is 2 years old. In how many years will he be 4 times as old as his cousin?
| |
Mr Ivan |
His cousin |
Difference |
| Before |
38 |
2 |
36 |
| Change |
+ ? |
+ ? |
|
| After |
4 u |
1 u |
3 u |
The difference in the age between Mr Ivan and his cousin at first and in the end remains the same.
Difference in the age between Mr Ivan and his cousin
= 4 u - 1 u
= 3 u
3 u = 38 - 2
3 u = 36
1 u = 36 ÷ 3 = 12
Number of years' time so Mr Ivan will be 4 times as old as his cousin
= 12 - 2
= 10
Answer(s): 10
