Sam is 3 years old now. His cousin is 30 years older than him. How old will Sam be when his age is
35 of his cousin's age?
| |
Sam |
His cousin |
Difference |
| Before |
|
|
30 |
| Change |
+ ? |
+ ? |
|
| After |
3 u |
5 u |
2 u |
The difference in the age between Sam and his cousin at first and in the end remains unchanged.
Number of years that his cousin is older than Sam
= 5 u - 3 u
= 2 u
2 u = 30
1 u = 30 ÷ 2 = 15
Sam's age when his age is
35 of his cousin's age
= 3 u
= 3 x 15
= 45
Answer(s): 45
