Jeremy is 4 years old. His auntie is 38 years older than him. In how many years will Jeremy's auntie be 3 times as old as Jeremy?
| |
His auntie |
Jeremy |
Difference |
| Before |
42 |
4 |
38 |
| Change |
+ ? |
+ ? |
|
| After |
3 u |
1 u |
2 u |
The difference in the age between Jeremy and his auntie at first and in the end remains the same.
Difference in the age between Jeremy and his auntie
= 3 u - 1 u
= 2 u
2 u = 38
1 u = 38 ÷ 2 = 19
The increase in age of Jeremy and his auntie remains the same.
Number of years' time so Jeremy's auntie will be 3 times as old as Jeremy
= 19 - 4
= 15
Answer(s): 15
