When Mr Lee is 44 years old, his daughter is 4 years old. In how many years will he be 6 times as old as his daughter?
| |
Mr Lee |
His daughter |
Difference |
| Before |
44 |
4 |
40 |
| Change |
+ ? |
+ ? |
|
| After |
6 u |
1 u |
5 u |
The difference in the age between Mr Lee and his daughter at first and in the end remains the same.
Difference in the age between Mr Lee and his daughter
= 6 u - 1 u
= 5 u
5 u = 44 - 4
5 u = 40
1 u = 40 ÷ 5 = 8
Number of years' time so Mr Lee will be 6 times as old as his daughter
= 8 - 4
= 4
Answer(s): 4
