Asher is 4 years old. His father is 30 years older than him. In how many years will Asher's father be 3 times as old as Asher?
| |
His father |
Asher |
Difference |
| Before |
34 |
4 |
30 |
| Change |
+ ? |
+ ? |
|
| After |
3 u |
1 u |
2 u |
The difference in the age between Asher and his father at first and in the end remains the same.
Difference in the age between Asher and his father
= 3 u - 1 u
= 2 u
2 u = 30
1 u = 30 ÷ 2 = 15
The increase in age of Asher and his father remains the same.
Number of years' time so Asher's father will be 3 times as old as Asher
= 15 - 4
= 11
Answer(s): 11
