Daniel's age is
16 of his uncle's. His uncle will be 35 years old in 5 years' time. In how many years' time will Daniel's age be
27 of his uncle's?
|
Daniel |
His uncle |
Difference |
Before |
1 u |
6 u |
25 |
Change |
+ 5 |
+ 5 |
|
After |
|
35 |
|
His uncle's current age
= 35 - 5
= 30
6 u = 30
1 u = 30 ÷ 6 = 5
Daniel's current age = 5
The difference in the age between Daniel and his uncle remains the same.
Difference in the age between Daniel and his uncle
= 6 u - 1 u
= 5 u
= 5 x 5
= 25
|
Daniel |
His uncle |
Difference |
Before |
1 u |
6 u |
25 |
Change |
+ ? |
+ ? |
|
After |
2 p |
7 p |
5 p |
5 p = 25
1 p = 25 ÷ 5 = 5
Daniel's age when he will be
27 of his uncle's age
= 2 p
= 2 x 5
= 10
Number of years' time when Daniel's age will be
27 of his uncle's age
= 2 p - 1 u
= 10 - 5
= 5
Answer(s): 5