When Mr Bryan is 27 years old, his cousin is 3 years old. In how many years will he be 4 times as old as his cousin?
|
Mr Bryan |
His cousin |
Difference |
Before |
27 |
3 |
24 |
Change |
+ ? |
+ ? |
|
After |
4 u |
1 u |
3 u |
The difference in the age between Mr Bryan and his cousin at first and in the end remains the same.
Difference in the age between Mr Bryan and his cousin
= 4 u - 1 u
= 3 u
3 u = 27 - 3
3 u = 24
1 u = 24 ÷ 3 = 8
Number of years' time so Mr Bryan will be 4 times as old as his cousin
= 8 - 3
= 5
Answer(s): 5