Daniel's age is
18 of his uncle's. His uncle will be 73 years old in 9 years' time. In how many years' time will Daniel's age be
37 of his uncle's?
|
Daniel |
His uncle |
Difference |
Before |
1 u |
8 u |
56 |
Change |
+ 9 |
+ 9 |
|
After |
|
73 |
|
His uncle's current age
= 73 - 9
= 64
8 u = 64
1 u = 64 ÷ 8 = 8
Daniel's current age = 8
The difference in the age between Daniel and his uncle remains the same.
Difference in the age between Daniel and his uncle
= 8 u - 1 u
= 7 u
= 7 x 8
= 56
|
Daniel |
His uncle |
Difference |
Before |
1 u |
8 u |
56 |
Change |
+ ? |
+ ? |
|
After |
3 p |
7 p |
4 p |
4 p = 56
1 p = 56 ÷ 4 = 14
Daniel's age when he will be
37 of his uncle's age
= 3 p
= 3 x 14
= 42
Number of years' time when Daniel's age will be
37 of his uncle's age
= 3 p - 1 u
= 42 - 14
= 28
Answer(s): 28