When Mr Michael is 33 years old, his daughter is 5 years old. In how many years will he be 3 times as old as his daughter?
| |
Mr Michael |
His daughter |
Difference |
| Before |
33 |
5 |
28 |
| Change |
+ ? |
+ ? |
|
| After |
3 u |
1 u |
2 u |
The difference in the age between Mr Michael and his daughter at first and in the end remains the same.
Difference in the age between Mr Michael and his daughter
= 3 u - 1 u
= 2 u
2 u = 33 - 5
2 u = 28
1 u = 28 ÷ 2 = 14
Number of years' time so Mr Michael will be 3 times as old as his daughter
= 14 - 5
= 9
Answer(s): 9
