When Mr Vaidev is 22 years old, his cousin is 2 years old. In how many years will he be 5 times as old as his cousin?
|
Mr Vaidev |
His cousin |
Difference |
Before |
22 |
2 |
20 |
Change |
+ ? |
+ ? |
|
After |
5 u |
1 u |
4 u |
The difference in the age between Mr Vaidev and his cousin at first and in the end remains the same.
Difference in the age between Mr Vaidev and his cousin
= 5 u - 1 u
= 4 u
4 u = 22 - 2
4 u = 20
1 u = 20 ÷ 4 = 5
Number of years' time so Mr Vaidev will be 5 times as old as his cousin
= 5 - 2
= 3
Answer(s): 3