When Mr Jeremy is 48 years old, his child is 6 years old. In how many years will he be 4 times as old as his child?
| |
Mr Jeremy |
His child |
Difference |
| Before |
48 |
6 |
42 |
| Change |
+ ? |
+ ? |
|
| After |
4 u |
1 u |
3 u |
The difference in the age between Mr Jeremy and his child at first and in the end remains the same.
Difference in the age between Mr Jeremy and his child
= 4 u - 1 u
= 3 u
3 u = 48 - 6
3 u = 42
1 u = 42 ÷ 3 = 14
Number of years' time so Mr Jeremy will be 4 times as old as his child
= 14 - 6
= 8
Answer(s): 8
