Pierre is 2 years old. His uncle is 24 years older than him. In how many years will Pierre's uncle be 5 times as old as Pierre?
| |
His uncle |
Pierre |
Difference |
| Before |
26 |
2 |
24 |
| Change |
+ ? |
+ ? |
|
| After |
5 u |
1 u |
4 u |
The difference in the age between Pierre and his uncle at first and in the end remains the same.
Difference in the age between Pierre and his uncle
= 5 u - 1 u
= 4 u
4 u = 24
1 u = 24 ÷ 4 = 6
The increase in age of Pierre and his uncle remains the same.
Number of years' time so Pierre's uncle will be 5 times as old as Pierre
= 6 - 2
= 4
Answer(s): 4
