When Mr Zeph is 32 years old, his son is 2 years old. In how many years will he be 6 times as old as his son?
| |
Mr Zeph |
His son |
Difference |
| Before |
32 |
2 |
30 |
| Change |
+ ? |
+ ? |
|
| After |
6 u |
1 u |
5 u |
The difference in the age between Mr Zeph and his son at first and in the end remains the same.
Difference in the age between Mr Zeph and his son
= 6 u - 1 u
= 5 u
5 u = 32 - 2
5 u = 30
1 u = 30 ÷ 5 = 6
Number of years' time so Mr Zeph will be 6 times as old as his son
= 6 - 2
= 4
Answer(s): 4
