Xavier is 3 years old. His auntie is 28 years older than him. In how many years will Xavier's auntie be 5 times as old as Xavier?
| |
His auntie |
Xavier |
Difference |
| Before |
31 |
3 |
28 |
| Change |
+ ? |
+ ? |
|
| After |
5 u |
1 u |
4 u |
The difference in the age between Xavier and his auntie at first and in the end remains the same.
Difference in the age between Xavier and his auntie
= 5 u - 1 u
= 4 u
4 u = 28
1 u = 28 ÷ 4 = 7
The increase in age of Xavier and his auntie remains the same.
Number of years' time so Xavier's auntie will be 5 times as old as Xavier
= 7 - 3
= 4
Answer(s): 4
