Daniel's age is
15 of his uncle's. His uncle will be 54 years old in 4 years' time. In how many years' time will Daniel's age be
27 of his uncle's?
|
Daniel |
His uncle |
Difference |
Before |
1 u |
5 u |
40 |
Change |
+ 4 |
+ 4 |
|
After |
|
54 |
|
His uncle's current age
= 54 - 4
= 50
5 u = 50
1 u = 50 ÷ 5 = 10
Daniel's current age = 10
The difference in the age between Daniel and his uncle remains the same.
Difference in the age between Daniel and his uncle
= 5 u - 1 u
= 4 u
= 4 x 10
= 40
|
Daniel |
His uncle |
Difference |
Before |
1 u |
5 u |
40 |
Change |
+ ? |
+ ? |
|
After |
2 p |
7 p |
5 p |
5 p = 40
1 p = 40 ÷ 5 = 8
Daniel's age when he will be
27 of his uncle's age
= 2 p
= 2 x 8
= 16
Number of years' time when Daniel's age will be
27 of his uncle's age
= 2 p - 1 u
= 16 - 8
= 8
Answer(s): 8