Harry's age is
34 his brother's age now. 25 years ago, his age was
13 that of his brother's. How old is Harry now?
|
Harry |
Harry's brother |
Difference |
Before |
1x1 = 1 u |
3x1 = 3 u |
2x1 = 2 u |
Change |
+ 25 |
+ 25 |
|
After |
3x2 = 6 u |
4x2 = 8 u |
1x2 = 2 u |
The difference in the age between Harry and Harry's brother remains unchanged. Make the difference in age the same. LCM of 2 and 1 is 2.
Increase in the age of Harry
= 6 u - 1 u
= 5 u
5 u = 25
1 u = 25 ÷ 5 = 5
Harry's age now
= 6 u
= 6 x 5
= 30
Answer(s): 30