Seth is 3 years old. His auntie is 25 years older than him. In how many years will Seth's auntie be 6 times as old as Seth?
|
His auntie |
Seth |
Difference |
Before |
28 |
3 |
25 |
Change |
+ ? |
+ ? |
|
After |
6 u |
1 u |
5 u |
The difference in the age between Seth and his auntie at first and in the end remains the same.
Difference in the age between Seth and his auntie
= 6 u - 1 u
= 5 u
5 u = 25
1 u = 25 ÷ 5 = 5
The increase in age of Seth and his auntie remains the same.
Number of years' time so Seth's auntie will be 6 times as old as Seth
= 5 - 3
= 2
Answer(s): 2