Harry is 5 years old. His auntie is 40 years older than him. In how many years will Harry's auntie be 6 times as old as Harry?
| |
His auntie |
Harry |
Difference |
| Before |
45 |
5 |
40 |
| Change |
+ ? |
+ ? |
|
| After |
6 u |
1 u |
5 u |
The difference in the age between Harry and his auntie at first and in the end remains the same.
Difference in the age between Harry and his auntie
= 6 u - 1 u
= 5 u
5 u = 40
1 u = 40 ÷ 5 = 8
The increase in age of Harry and his auntie remains the same.
Number of years' time so Harry's auntie will be 6 times as old as Harry
= 8 - 5
= 3
Answer(s): 3
