Daniel's age is
19 of his uncle's. His uncle will be 39 years old in 3 years' time. In how many years' time will Daniel's age be
37 of his uncle's?
|
Daniel |
His uncle |
Difference |
Before |
1 u |
9 u |
32 |
Change |
+ 3 |
+ 3 |
|
After |
|
39 |
|
His uncle's current age
= 39 - 3
= 36
9 u = 36
1 u = 36 ÷ 9 = 4
Daniel's current age = 4
The difference in the age between Daniel and his uncle remains the same.
Difference in the age between Daniel and his uncle
= 9 u - 1 u
= 8 u
= 8 x 4
= 32
|
Daniel |
His uncle |
Difference |
Before |
1 u |
9 u |
32 |
Change |
+ ? |
+ ? |
|
After |
3 p |
7 p |
4 p |
4 p = 32
1 p = 32 ÷ 4 = 8
Daniel's age when he will be
37 of his uncle's age
= 3 p
= 3 x 8
= 24
Number of years' time when Daniel's age will be
37 of his uncle's age
= 3 p - 1 u
= 24 - 8
= 16
Answer(s): 16