Tim is 4 years old now. His sister is 24 years older than him. How old will Tim be when his age is
47 of his sister's age?
| |
Tim |
His sister |
Difference |
| Before |
|
|
24 |
| Change |
+ ? |
+ ? |
|
| After |
4 u |
7 u |
3 u |
The difference in the age between Tim and his sister at first and in the end remains unchanged.
Number of years that his sister is older than Tim
= 7 u - 4 u
= 3 u
3 u = 24
1 u = 24 ÷ 3 = 8
Tim's age when his age is
47 of his sister's age
= 4 u
= 4 x 8
= 32
Answer(s): 32
