Harry is 3 years old. His father is 32 years older than him. In how many years will Harry's father be 3 times as old as Harry?
| |
His father |
Harry |
Difference |
| Before |
35 |
3 |
32 |
| Change |
+ ? |
+ ? |
|
| After |
3 u |
1 u |
2 u |
The difference in the age between Harry and his father at first and in the end remains the same.
Difference in the age between Harry and his father
= 3 u - 1 u
= 2 u
2 u = 32
1 u = 32 ÷ 2 = 16
The increase in age of Harry and his father remains the same.
Number of years' time so Harry's father will be 3 times as old as Harry
= 16 - 3
= 13
Answer(s): 13
