Harry is 4 years old now. His sister is 35 years older than him. How old will Harry be when his age is
49 of his sister's age?
| |
Harry |
His sister |
Difference |
| Before |
|
|
35 |
| Change |
+ ? |
+ ? |
|
| After |
4 u |
9 u |
5 u |
The difference in the age between Harry and his sister at first and in the end remains unchanged.
Number of years that his sister is older than Harry
= 9 u - 4 u
= 5 u
5 u = 35
1 u = 35 ÷ 5 = 7
Harry's age when his age is
49 of his sister's age
= 4 u
= 4 x 7
= 28
Answer(s): 28
