Oscar is 6 years old. His uncle is 40 years older than him. In how many years will Oscar's uncle be 6 times as old as Oscar?
| |
His uncle |
Oscar |
Difference |
| Before |
46 |
6 |
40 |
| Change |
+ ? |
+ ? |
|
| After |
6 u |
1 u |
5 u |
The difference in the age between Oscar and his uncle at first and in the end remains the same.
Difference in the age between Oscar and his uncle
= 6 u - 1 u
= 5 u
5 u = 40
1 u = 40 ÷ 5 = 8
The increase in age of Oscar and his uncle remains the same.
Number of years' time so Oscar's uncle will be 6 times as old as Oscar
= 8 - 6
= 2
Answer(s): 2
