Daniel's age is
15 of his uncle's. His uncle will be 36 years old in 6 years' time. In how many years' time will Daniel's age be
57 of his uncle's?
|
Daniel |
His uncle |
Difference |
Before |
1 u |
5 u |
24 |
Change |
+ 6 |
+ 6 |
|
After |
|
36 |
|
His uncle's current age
= 36 - 6
= 30
5 u = 30
1 u = 30 ÷ 5 = 6
Daniel's current age = 6
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 6
= 24
|
Daniel |
His uncle |
Difference |
Before |
1 u |
5 u |
24 |
Change |
+ ? |
+ ? |
|
After |
5 p |
7 p |
2 p |
2 p = 24
1 p = 24 ÷ 2 = 12
Daniel's age when he will be
57 of his uncle's age
= 5 p
= 5 x 12
= 60
Number of years' time when Daniel's age will be
57 of his uncle's age
= 5 p - 1 u
= 60 - 12
= 48
Answer(s): 48