Michael is 4 years old now. His cousin is 18 years older than him. How old will Michael be when his age is
57 of his cousin's age?
|
Michael |
His cousin |
Difference |
Before |
|
|
18 |
Change |
+ ? |
+ ? |
|
After |
5 u |
7 u |
2 u |
The difference in the age between Michael and his cousin at first and in the end remains unchanged.
Number of years that his cousin is older than Michael
= 7 u - 5 u
= 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Michael's age when his age is
57 of his cousin's age
= 5 u
= 5 x 9
= 45
Answer(s): 45