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